I'm new in Xamarin and i'm trying to create a simple page with some components.
One of these component is a Switch it works fine by itself but i would like to change the basic text "inactive/active" by "male/female"
I've seen that in Xaml for windows phone there is a ToggleSwitch Component with a On/OffContent property but i can't seems to find an equivalent in XAML for Xamarin Forms
any idea ?
Thank you!
The lack of built in switch options, or at least the lack of being able to rename the switch options, has been asked a few times.
You could go with custom renders, modify the text at the OS level or do like I chose to do, just build your own switch.
This switch is two buttons laid out horizontally with the text Yes and No. The selected button gets a red border, and the unselected a transparent border.
class CustomSwitch : Grid
{
public event EventHandler<SelectedItemChangedEventArgs> ItemSelected;
private Button negative;
private Button positive;
public static readonly BindableProperty SelectedItemProperty = BindableProperty.Create<CustomSwitch, Object>(t => t.SelectedItem, null, BindingMode.TwoWay, propertyChanged: OnSelectedItemChanged);
public CustomSwitch()
{
try
{
this.HorizontalOptions = LayoutOptions.Center;
this.VerticalOptions = LayoutOptions.Center;
negative = new Button();
negative.Text = "No";
negative.Style = <YourNameSpace>.AppStyling.Style_Button_Switch;
negative.Clicked += (o,s) => OnSelectedItemChanged(this, ItemSelected, (int)Classes.Collections.Enums.SelectionStatus.False);
positive = new Button();
positive.Text = "Yes";
positive.Style = <YourNameSpace>.AppStyling.Style_Button_Switch;
positive.Clicked += (o, s) => OnSelectedItemChanged(this, ItemSelected, (int)Classes.Collections.Enums.SelectionStatus.True);
this.Children.Add(negative, 0,0);
this.Children.Add(positive, 1,0);
}
catch(System.Exception ex)
{
<YourNameSpace>.Classes.Helpers.Helper_ErrorHandling.SendErrorToServer(ex, this.GetType().Name, System.Reflection.MethodBase.GetCurrentMethod().Name);
}
}
public Object SelectedItem
{
get
{
return base.GetValue(SelectedItemProperty);
}
set
{
if (SelectedItem != value)
{
base.SetValue(SelectedItemProperty, value);
InternalUpdateSelected();
}
}
}
private void InternalUpdateSelected()
{
if((int)SelectedItem == (int)Classes.Collections.Enums.SelectionStatus.False)
{
negative.BorderColor = <YourNameSpace>.AppStyling.Color_Selected;
positive.BorderColor = <YourNameSpace>.AppStyling.Color_UnSelected;
positive.Opacity = <YourNameSpace>.AppStyling.Opaque_High;
}
else if ((int)SelectedItem == (int)Classes.Collections.Enums.SelectionStatus.True)
{
negative.BorderColor = <YourNameSpace>.AppStyling.Color_UnSelected;
negative.Opacity = <YourNameSpace>.AppStyling.Opaque_High;
positive.BorderColor = <YourNameSpace>.AppStyling.Color_Selected;
}
else
{
negative.BorderColor = <YourNameSpace>.AppStyling.Color_UnSelected;
negative.Opacity = <YourNameSpace>.AppStyling.Opaque_High;
positive.BorderColor = <YourNameSpace>.AppStyling.Color_UnSelected;
positive.Opacity = <YourNameSpace>.AppStyling.Opaque_High;
}
}
private static void OnSelectedItemChanged(BindableObject bindable, object oldValue, object newValue)
{
CustomSwitch boundSwitch = (CustomSwitch)bindable;
if((int)newValue != (int)Classes.Collections.Enums.SelectionStatus.Unselected)
{
boundSwitch.SelectedItem = (int)newValue == (int)Classes.Collections.Enums.SelectionStatus.False ? (int)Classes.Collections.Enums.SelectionStatus.False : (int)Classes.Collections.Enums.SelectionStatus.True;
}
if (boundSwitch.ItemSelected != null)
{
boundSwitch.ItemSelected(boundSwitch, new SelectedItemChangedEventArgs(newValue));
}
boundSwitch.InternalUpdateSelected();
}
}
Related
Goal
I'd like to have my ComboBox items suggest and append its items when something is contained in them, not just via the StartsWith function.
My ComboBox is bound to a DataView which contains clients [CompanyName], [Address], [City] in a long concatenation.
I want my users to be able to type in the city and still find the records which matches with all of the fields above. I know this is possible with Infragistics but I don't have that package.
Search Term: "Sher"
Costco, 123 1st Avenue, Sherbrooke
Provigo, 344 Ball Street, Sherbrooke
Sherbox, 93 7th Street, Montreal
Is this possible in VB.Net or should I be searching for something else?
I did some research and found the following question:
Override Winforms ComboBox Autocomplete Suggest Rule
In that question they reffer to another question:
C# AutoComplete
Let's quote the best answer from that question
The existing AutoComplete functionality only supports searching by
prefix. There doesn't seem to be any decent way to override the
behavior.
Some people have implemented their own autocomplete functions by
overriding the OnTextChanged event. That's probably your best bet.
For example, you can add a ListBox just below the TextBox and set
its default visibility to false. Then you can use the OnTextChanged
event of the TextBox and the SelectedIndexChanged event of the
ListBox to display and select items.
This seems to work pretty well as a rudimentary example:
public Form1()
{
InitializeComponent();
acsc = new AutoCompleteStringCollection();
textBox1.AutoCompleteCustomSource = acsc;
textBox1.AutoCompleteMode = AutoCompleteMode.None;
textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource;
}
private void button1_Click(object sender, EventArgs e)
{
acsc.Add("[001] some kind of item");
acsc.Add("[002] some other item");
acsc.Add("[003] an orange");
acsc.Add("[004] i like pickles");
}
void textBox1_TextChanged(object sender, System.EventArgs e)
{
listBox1.Items.Clear();
if (textBox1.Text.Length == 0)
{
hideResults();
return;
}
foreach (String s in textBox1.AutoCompleteCustomSource)
{
if (s.Contains(textBox1.Text))
{
Console.WriteLine("Found text in: " + s);
listBox1.Items.Add(s);
listBox1.Visible = true;
}
}
}
void listBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
textBox1.Text = listBox1.Items[listBox1.SelectedIndex].ToString();
hideResults();
}
void listBox1_LostFocus(object sender, System.EventArgs e)
{
hideResults();
}
void hideResults()
{
listBox1.Visible = false;
}
There's a lot more you could do without too much effort: append text
to the text box, capture additional keyboard commands, and so forth.
Improved the technique demonstrated by BenD in his answer so as to have the mechanism handle a bit more elegantly certain cornercases:
public sealed class CCComboboxAutocomplete : ComboBox
{
public CCComboboxAutocomplete()
{
AutoCompleteMode = AutoCompleteMode.Suggest; //crucial otherwise exceptions occur when the user types in text which is not found in the autocompletion list
}
protected override void OnTextChanged(EventArgs e)
{
try
{
if (DesignMode || !string.IsNullOrEmpty(Text) || !Visible) return;
ResetCompletionList();
}
finally
{
base.OnTextChanged(e);
}
}
protected override void OnKeyPress(KeyPressEventArgs e)
{
try
{
if (DesignMode) return;
if (e.KeyChar == '\r' || e.KeyChar == '\n')
{
e.Handled = true;
if (SelectedIndex == -1 && Items.Count > 0 && Items[0].ToString().ToLowerInvariant().StartsWith(Text.ToLowerInvariant()))
{
Text = Items[0].ToString();
}
DroppedDown = false;
return; //0
}
BeginInvoke(new Action(ReevaluateCompletionList)); //1
}
finally
{
base.OnKeyPress(e);
}
}
//0 Guardclose when detecting any enter keypresses to avoid a glitch which was selecting an item by means of down arrow key followed by enter to wipe out the text within
//1 Its crucial that we use begininvoke because we need the changes to sink into the textfield Omitting begininvoke would cause the searchterm to lag behind by one character That is the last character that got typed in
private void ResetCompletionList()
{
_previousSearchterm = null;
try
{
SuspendLayout();
var originalList = (object[])Tag;
if (originalList == null)
{
Tag = originalList = Items.Cast<object>().ToArray();
}
if (Items.Count == originalList.Length) return;
while (Items.Count > 0)
{
Items.RemoveAt(0);
}
Items.AddRange(originalList);
}
finally
{
ResumeLayout(performLayout: true);
}
}
private string _previousSearchterm;
private void ReevaluateCompletionList()
{
var currentSearchterm = Text.ToLowerInvariant();
if (currentSearchterm == _previousSearchterm) return; //optimization
_previousSearchterm = currentSearchterm;
try
{
SuspendLayout();
var originalList = (object[])Tag;
if (originalList == null)
{
Tag = originalList = Items.Cast<object>().ToArray(); //0
}
var newList = (object[])null;
if (string.IsNullOrEmpty(currentSearchterm))
{
if (Items.Count == originalList.Length) return;
newList = originalList;
}
else
{
newList = originalList.Where(x => x.ToString().ToLowerInvariant().Contains(currentSearchterm)).ToArray();
}
try
{
while (Items.Count > 0) //1
{
Items.RemoveAt(0);
}
}
catch
{
try
{
Items.Clear();
}
catch
{
}
}
Items.AddRange(newList.ToArray()); //2
}
finally
{
if (currentSearchterm.Length >= 2 && !DroppedDown)
{
DroppedDown = true; //3
Cursor.Current = Cursors.Default; //4
Text = currentSearchterm; //5
Select(currentSearchterm.Length, 0);
}
ResumeLayout(performLayout: true);
}
}
//0 backup original list
//1 clear list by loop through it otherwise the cursor would move to the beginning of the textbox
//2 reset list
//3 if the current searchterm is empty we leave the dropdown list to whatever state it already had
//4 workaround for the fact the cursor disappears due to droppeddown=true This is a known bu.g plaguing combobox which microsoft denies to fix for years now
//5 Another workaround for a glitch which causes all text to be selected when there is a matching entry which starts with the exact text being typed in
}
Sorry for another answer in C# but I have a more improved answer based on xDisruptor's code.
Using kinda behavior (decorator).
You don't have to subclass ComboBox and change all existing combos in the designed.
Be careful when using Datasource instead of Items collection, because it'll raise an exception.
Code:
public class AutoCompleteBehavior
{
private readonly ComboBox comboBox;
private string previousSearchterm;
private object[] originalList;
public AutoCompleteBehavior(ComboBox comboBox)
{
this.comboBox = comboBox;
this.comboBox.AutoCompleteMode = AutoCompleteMode.Suggest; // crucial otherwise exceptions occur when the user types in text which is not found in the autocompletion list
this.comboBox.TextChanged += this.OnTextChanged;
this.comboBox.KeyPress += this.OnKeyPress;
this.comboBox.SelectionChangeCommitted += this.OnSelectionChangeCommitted;
}
private void OnSelectionChangeCommitted(object sender, EventArgs e)
{
if (this.comboBox.SelectedItem == null)
{
return;
}
var sel = this.comboBox.SelectedItem;
this.ResetCompletionList();
this.comboBox.SelectedItem = sel;
}
private void OnTextChanged(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(this.comboBox.Text) || !this.comboBox.Visible || !this.comboBox.Enabled)
{
return;
}
this.ResetCompletionList();
}
private void OnKeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == '\r' || e.KeyChar == '\n')
{
e.Handled = true;
if (this.comboBox.SelectedIndex == -1 && this.comboBox.Items.Count > 0
&& this.comboBox.Items[0].ToString().ToLowerInvariant().StartsWith(this.comboBox.Text.ToLowerInvariant()))
{
this.comboBox.Text = this.comboBox.Items[0].ToString();
}
this.comboBox.DroppedDown = false;
// Guardclause when detecting any enter keypresses to avoid a glitch which was selecting an item by means of down arrow key followed by enter to wipe out the text within
return;
}
// Its crucial that we use begininvoke because we need the changes to sink into the textfield Omitting begininvoke would cause the searchterm to lag behind by one character That is the last character that got typed in
this.comboBox.BeginInvoke(new Action(this.ReevaluateCompletionList));
}
private void ResetCompletionList()
{
this.previousSearchterm = null;
try
{
this.comboBox.SuspendLayout();
if (this.originalList == null)
{
this.originalList = this.comboBox.Items.Cast<object>().ToArray();
}
if (this.comboBox.Items.Count == this.originalList.Length)
{
return;
}
while (this.comboBox.Items.Count > 0)
{
this.comboBox.Items.RemoveAt(0);
}
this.comboBox.Items.AddRange(this.originalList);
}
finally
{
this.comboBox.ResumeLayout(true);
}
}
private void ReevaluateCompletionList()
{
var currentSearchterm = this.comboBox.Text.ToLowerInvariant();
if (currentSearchterm == this.previousSearchterm)
{
return;
}
this.previousSearchterm = currentSearchterm;
try
{
this.comboBox.SuspendLayout();
if (this.originalList == null)
{
this.originalList = this.comboBox.Items.Cast<object>().ToArray(); // backup original list
}
object[] newList;
if (string.IsNullOrEmpty(currentSearchterm))
{
if (this.comboBox.Items.Count == this.originalList.Length)
{
return;
}
newList = this.originalList;
}
else
{
newList = this.originalList.Where(x => x.ToString().ToLowerInvariant().Contains(currentSearchterm)).ToArray();
}
try
{
// clear list by loop through it otherwise the cursor would move to the beginning of the textbox
while (this.comboBox.Items.Count > 0)
{
this.comboBox.Items.RemoveAt(0);
}
}
catch
{
try
{
this.comboBox.Items.Clear();
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
this.comboBox.Items.AddRange(newList.ToArray()); // reset list
}
finally
{
if (currentSearchterm.Length >= 1 && !this.comboBox.DroppedDown)
{
this.comboBox.DroppedDown = true; // if the current searchterm is empty we leave the dropdown list to whatever state it already had
Cursor.Current = Cursors.Default; // workaround for the fact the cursor disappears due to droppeddown=true This is a known bu.g plaguing combobox which microsoft denies to fix for years now
this.comboBox.Text = currentSearchterm; // Another workaround for a glitch which causes all text to be selected when there is a matching entry which starts with the exact text being typed in
this.comboBox.Select(currentSearchterm.Length, 0);
}
this.comboBox.ResumeLayout(true);
}
}
}
Usege:
new AutoCompleteBehavior(this.comboBoxItems);
this.comboBoxItems.Items.AddRange(new object[] { "John", "Tina", "Doctor", "Alaska" });
TIP: Can be further improved by making an extension to the ComboBox class like myCombo.ToAutoComplete()
A ComboBox,TextBox and I think a DropDownList has AutoComplete properties
Look at http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.autocompletemode(v=vs.110).aspx
It explains which AutoCompleteMode you should use and how to set the AutoCompleteSource
You could try the following lines, it worked for me
cbxName.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
cbxName.AutoCompleteSource = AutoCompleteSource.ListItems;
In my app I have A grid with visibility bound to a property in the view model.
What I want to do is when the visibility property changes at the view model, the grid fades in or out according to the visibility value: Visible/Collapsed.
how can I achieve this ?
Inspired by the answer of "HDW Production", here's the code for Windows Store and Windows Phone Store apps:
public class FadingVisibilityGrid : Grid
{
public static readonly DependencyProperty DeferredVisibilityProperty = DependencyProperty.Register(
"DeferredVisibility", typeof (Visibility), typeof (FadingVisibilityGrid), new PropertyMetadata(default(Visibility), DeferredVisibilityChanged));
private static void DeferredVisibilityChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
var newVisibility = (Visibility)e.NewValue;
var grid = (FadingVisibilityGrid)sender;
var animation = new DoubleAnimation
{
Duration = new Duration(TimeSpan.FromMilliseconds(200))
};
Storyboard.SetTarget(animation, grid);
Storyboard.SetTargetProperty(animation, "Grid.Opacity");
grid.FadeStoryBoard.Stop();
grid.FadeStoryBoard = new Storyboard();
grid.FadeStoryBoard.Children.Add(animation);
if (newVisibility == Visibility.Visible)
{
animation.From = 0;
animation.To = 1;
grid.Visibility = Visibility.Visible;
grid.FadeStoryBoard.Begin();
}
else
{
animation.From = 1;
animation.To = 0;
grid.FadeStoryBoard.Completed += (o, o1) =>
{
grid.Visibility = newVisibility;
};
grid.FadeStoryBoard.Begin();
}
}
public Visibility DeferredVisibility
{
get { return (Visibility) GetValue(DeferredVisibilityProperty); }
set { SetValue(DeferredVisibilityProperty, value); }
}
private Storyboard _fadeStoryBoard = new Storyboard();
public Storyboard FadeStoryBoard
{
get { return _fadeStoryBoard; }
set { _fadeStoryBoard = value; }
}
}
You need a new DependencyProperty, either by inheriting from Grid and adding one or by creating an attached property. Let's call it DeferredVisibility and let it be of type Visibility.
When DeferredVisibility is changed to Visible, set the Visibility to Visible and animate the opacity from 0 to 1.
When DeferredVisibility is changed to Collapsed, animate the opacity from 1 to 0 and THEN set the Visibility to Collapsed.
could someone tell me why my screenshots are only black? I am still learning and couldnt find a clue why they are only black.
This is my Utility class
static class XNAUtilities
{
private static RenderTarget2D ssTexture;
private static KeyboardState currentState, previousState;
private static int counter;
public static void TakeScreenShot(GraphicsDevice device, Keys theKey)
{
// Take Screenshot
currentState = Keyboard.GetState();
if (currentState.IsKeyDown(theKey) && previousState.IsKeyUp(theKey))
{
//device.SetRenderTarget(null);
PresentationParameters pparameters = device.PresentationParameters;
ssTexture = new RenderTarget2D(device, pparameters.BackBufferWidth, pparameters.BackBufferHeight, false, SurfaceFormat.Color, DepthFormat.None); //??
FileStream fileStream = new System.IO.FileStream(#"Screenshot" + "_" + counter + ".png", System.IO.FileMode.CreateNew);
ssTexture.SaveAsPng(fileStream, pparameters.BackBufferWidth, pparameters.BackBufferHeight);
counter++;
}
previousState = currentState;
}
}
}
This is my Update and Draw from Game1.cs
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
myModelRotation += MathHelper.ToRadians(1f);
// Take a Screenshot
XNAUtilities.TakeScreenShot(GraphicsDevice, Keys.F8);
base.Update(gameTime);
}
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.CornflowerBlue);
Matrix[] transforms = new Matrix[myModel.Bones.Count];
myModel.CopyAbsoluteBoneTransformsTo(transforms);
foreach (ModelMesh mesh in myModel.Meshes)
{
foreach (BasicEffect effects in mesh.Effects)
{
effects.EnableDefaultLighting();
effects.World = transforms[mesh.ParentBone.Index]
* Matrix.CreateRotationY(myModelRotation)
* Matrix.CreateTranslation(myModelPosition);
effects.View = Matrix.CreateLookAt(new Vector3(200, 100, 400), Vector3.Zero, Vector3.Up);
effects.Projection = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45f),
GraphicsDevice.Viewport.AspectRatio, 1, 5000);
}
mesh.Draw();
}
smileySprite.DrawSprites(GraphicsDevice, spriteBatch, new Vector2(10,10), Color.White);
base.Draw(gameTime);
}
You're not actually rendering to your render target. So you're saving the blank target.
You need to wrap your scene drawing like so:
GraphicsDevice.SetRenderTarget(ssTexture);
// Render your scene here
GraphicsDevice.SetRenderTarget(null);
// Now you can save your render target as a texture
I have a Page with an Pivot-control and in some cases I don't want to show a particular PivotItem.
Setting the Visibility to collapsed doesn't seem to affect it at all.
Any suggestions?
you should be able to remove or add PivotItems dynamically in your Pivot by using the respective collection methods on Pivot.Items .
Let me know if this doesn't work for your scenario.
I've created a custom behavior for showing/hiding pivot item
Usage:
< i:Interaction.Behaviors>
< common:HideablePivotItemBehavior Visible="{Binding variable}" />
</ i:Interaction.Behaviors >
Code:
/// <summary>
/// Behavior which enables showing/hiding of a pivot item`
/// </summary>
public class HideablePivotItemBehavior : Behavior<PivotItem>
{
#region Static Fields
public static readonly DependencyProperty VisibleProperty = DependencyProperty.Register(
"Visible",
typeof(bool),
typeof(HideablePivotItemBehavior),
new PropertyMetadata(true, VisiblePropertyChanged));
#endregion
#region Fields
private Pivot _parentPivot;
private PivotItem _pivotItem;
private int _previousPivotItemIndex;
private int _lastPivotItemsCount;
#endregion
#region Public Properties
public bool Visible
{
get
{
return (bool)this.GetValue(VisibleProperty);
}
set
{
this.SetValue(VisibleProperty, value);
}
}
#endregion
#region Methods
protected override void OnAttached()
{
base.OnAttached();
this._pivotItem = AssociatedObject;
}
private static void VisiblePropertyChanged(DependencyObject dpObj, DependencyPropertyChangedEventArgs change)
{
if (change.NewValue.GetType() != typeof(bool) || dpObj.GetType() != typeof(HideablePivotItemBehavior))
{
return;
}
var behavior = (HideablePivotItemBehavior)dpObj;
var pivotItem = behavior._pivotItem;
// Parent pivot has to be assigned after the visual tree is initialized
if (behavior._parentPivot == null)
{
behavior._parentPivot = (Pivot)behavior._pivotItem.Parent;
// if the parent is null return
if (behavior._parentPivot == null)
{
return;
}
}
var parentPivot = behavior._parentPivot;
if (!(bool)change.NewValue)
{
if (parentPivot.Items.Contains(behavior._pivotItem))
{
behavior._previousPivotItemIndex = parentPivot.Items.IndexOf(pivotItem);
parentPivot.Items.Remove(pivotItem);
behavior._lastPivotItemsCount = parentPivot.Items.Count;
}
}
else
{
if (!parentPivot.Items.Contains(pivotItem))
{
if (behavior._lastPivotItemsCount >= parentPivot.Items.Count)
{
parentPivot.Items.Insert(behavior._previousPivotItemIndex, pivotItem);
}
else
{
parentPivot.Items.Add(pivotItem);
}
}
}
}
#endregion
}
You can remove the pivot item from the parent pivot control
parentPivotControl.Items.Remove(pivotItemToBeRemoved);
Removing PivotItems is easy, but if you want to put them back afterwards I've found that the headers get messed up and start overlapping each other. This also happens if you set the Visibility of a header to Collapsed and then later make it Visible again.
So I solved my particular problem by setting the opacity of each unwanted PivotItem (and its header) to 0.
PivotItem p = (PivotItem)MainPivot.Items.ToList()[indexToHide];
p.Opacity = 0;
((UIElement)p.Header).Opacity = 0;
However, this leaves gaps where the missing PivotItems are.
For me, the gaps were not a problem because I only want to remove items at the end of my PivotItemList, so I get some whitespace between the last and first PivotItems. The problem was, I was still able to swipe to a hidden PivotItem. In order to fix this, I overrode Pivot.SelectionChanged() so that whenever the user swipes to a hidden PivotItem, the code moves on to the next item instead. I had to use a DispatchTimer from within SelectionChanged() and actually move to the next PivotItem from the DispatchTimer callback, since you have to be in the UI thread to change PivotItem.SelectedIndex.
private void MainPivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
t.Stop(); //t is my DispatchTimer, set to 100ms
if (MainPivot.SelectedIndex >= mFirstHiddenPivotItemIndex)
{
//move to the first or last PivotItem, depending on the current index
if (mCurrentSelectedPivotItemIndex == 0)
mPivotItemToMoveTo = mFirstHiddenPivotItemIndex - 1;
else
mPivotItemToMoveTo = 0;
t.Start();
}
mCurrentSelectedPivotItemIndex = MainPivot.SelectedIndex;
}
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
MainPivot.SelectedIndex = mPivotItemToMoveTo;
t.Stop();
}
foreach (PivotItem item in MyPivot.Items.ToList())
{
if (item.Visibility == Visibility.Collapsed)
MyPivot.Items.Remove(item);
}
Setting IsLocked property to true will make all other Pivot items to disappear except the current pivot item.
But this will not hide one particular pivot item of our choice.
To elaborate on the solution of adding/removing pivotItems, rather than hiding them.
Let's say we want the pivotItem to be initially invisible, and appear only on a certain event.
mainPivot.Items.Remove(someTab);
Then to add it again,
if (!mainPivot.Items.Cast<PivotItem>().Any(p => p.Name == "someTab"))
{
mainPivot.Items.Insert(1,someTab);
}
I've used Insert rather than add to control the position where the tab appears.
You have to ensure you don't add the same tab twice, which is the reason for the if statement.
I've modified the Bajena behavior to improve it, solving the issue with losing the original position of the PivotItem when showing/hiding repeteadly and the issue when parentpivot control is null (not initialized yet).
Notice that this behavior must be attached to the Pivot, not to the PivotItem.
Code:
public class PivotItemHideableBehavior : Behavior<Pivot>
{
private Dictionary<PivotItem, int> DictionaryIndexes { get; set; }
public static readonly DependencyProperty VisibleProperty = DependencyProperty.Register(
"Visible",
typeof(bool),
typeof(PivotItemHideableBehavior),
new PropertyMetadata(true, VisiblePropertyChanged));
public static readonly DependencyProperty PivotItemProperty = DependencyProperty.Register(
"PivotItem",
typeof(PivotItem),
typeof(PivotItemHideableBehavior),
new PropertyMetadata(null));
public bool Visible
{
get { return (bool)GetValue(VisibleProperty); }
set { SetValue(VisibleProperty, value); }
}
public PivotItem PivotItem
{
get { return (PivotItem)GetValue(PivotItemProperty); }
set { SetValue(PivotItemProperty, value); }
}
protected override void OnAttached()
{
base.OnAttached();
AssociatedObject.Loaded += AssociatedObject_Loaded;
}
protected override void OnDetaching()
{
base.OnDetaching();
AssociatedObject.Loaded -= AssociatedObject_Loaded;
}
private void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
{
DictionaryIndexes = new Dictionary<PivotItem, int>();
int index = 0;
foreach (PivotItem item in AssociatedObject.Items)
DictionaryIndexes.Add(item, index++);
}
private static void VisiblePropertyChanged(DependencyObject dpObj, DependencyPropertyChangedEventArgs change)
{
var behavior = (PivotItemHideableBehavior)dpObj;
var pivot = behavior.AssociatedObject;
if (!behavior.Visible)
{
if (pivot.Items.Contains(behavior.PivotItem))
pivot.Items.Remove(behavior.PivotItem);
}
else if (!pivot.Items.Contains(behavior.PivotItem))
{
int index = 0;
foreach (var item in behavior.DictionaryIndexes)
{
if (item.Key == behavior.PivotItem)
pivot.Items.Insert(index, behavior.PivotItem);
else if (pivot.Items.Contains(item.Key))
index++;
}
}
}
}
Usage:
<Interactivity:Interaction.Behaviors>
<Behaviors:PivotItemHideableBehavior PivotItem="{x:Bind PivotItemName}" Visible="{Binding IsPivotItemVisible}" />
</Interactivity:Interaction.Behaviors>
Do anyone have good ideas of how to modify the toolbar for the WinForms version of the ReportViewer Toolbar?
That is, I want to remove some buttons and varius, but it looks like the solution is to create a brand new toolbar instead of modifying the one that is there.
Like, I had to remove export to excel, and did it this way:
// Disable excel export
foreach (RenderingExtension extension in lr.ListRenderingExtensions()) {
if (extension.Name == "Excel") {
//extension.Visible = false; // Property is readonly...
FieldInfo fi = extension.GetType().GetField("m_isVisible", BindingFlags.Instance | BindingFlags.NonPublic);
fi.SetValue(extension, false);
}
}
A bit trickysh if you ask me..
For removing toolbarbuttons, an possible way was to iterate through the Control array inside the ReportViewer and change the Visible property for the buttons to hide, but it gets reset all the time, so it is not an good way..
WHEN do MS come with an new version btw?
Yeap. You can do that in a little tricky way.
I had a task to add more scale factors to zoom report. I did it this way:
private readonly string[] ZOOM_VALUES = { "25%", "50%", "75%", "100%", "110%", "120%", "125%", "130%", "140%", "150%", "175%", "200%", "300%", "400%", "500%" };
private readonly int DEFAULT_ZOOM = 3;
//--
public ucReportViewer()
{
InitializeComponent();
this.reportViewer1.ProcessingMode = ProcessingMode.Local;
setScaleFactor(ZOOM_VALUES[DEFAULT_ZOOM]);
Control[] tb = reportViewer1.Controls.Find("ReportToolBar", true);
ToolStrip ts;
if (tb != null && tb.Length > 0 && tb[0].Controls.Count > 0 && (ts = tb[0].Controls[0] as ToolStrip) != null)
{
//here we go if our trick works (tested at .NET Framework 2.0.50727 SP1)
ToolStripComboBox tscb = new ToolStripComboBox();
tscb.DropDownStyle = ComboBoxStyle.DropDownList;
tscb.Items.AddRange(ZOOM_VALUES);
tscb.SelectedIndex = 3; //100%
tscb.SelectedIndexChanged += new EventHandler(toolStripZoomPercent_Click);
ts.Items.Add(tscb);
}
else
{
//if there is some problems - just use context menu
ContextMenuStrip cmZoomMenu = new ContextMenuStrip();
for (int i = 0; i < ZOOM_VALUES.Length; i++)
{
ToolStripMenuItem tsmi = new ToolStripMenuItem(ZOOM_VALUES[i]);
tsmi.Checked = (i == DEFAULT_ZOOM);
//tsmi.Tag = (IntPtr)cmZoomMenu;
tsmi.Click += new EventHandler(toolStripZoomPercent_Click);
cmZoomMenu.Items.Add(tsmi);
}
reportViewer1.ContextMenuStrip = cmZoomMenu;
}
}
private bool setScaleFactor(string value)
{
try
{
int percent = Convert.ToInt32(value.TrimEnd('%'));
reportViewer1.ZoomMode = ZoomMode.Percent;
reportViewer1.ZoomPercent = percent;
return true;
}
catch
{
return false;
}
}
private void toolStripZoomPercent_Click(object sender, EventArgs e)
{
ToolStripMenuItem tsmi = sender as ToolStripMenuItem;
ToolStripComboBox tscb = sender as ToolStripComboBox;
if (tscb != null && tscb.SelectedIndex > -1)
{
setScaleFactor(tscb.Items[tscb.SelectedIndex].ToString());
}
else if (tsmi != null)
{
if (setScaleFactor(tsmi.Text))
{
foreach (ToolStripItem tsi in tsmi.Owner.Items)
{
ToolStripMenuItem item = tsi as ToolStripMenuItem;
if (item != null && item.Checked)
{
item.Checked = false;
}
}
tsmi.Checked = true;
}
else
{
tsmi.Checked = false;
}
}
}
Get the toolbar from ReportViewer control:
ToolStrip toolStrip = (ToolStrip)reportViewer.Controls.Find("toolStrip1", true)[0]
Add new items:
toolStrip.Items.Add(...)
There are a lot of properties to set which buttons would you like to see.
For example ShowBackButton, ShowExportButton, ShowFindControls, and so on. Check them in the help, all starts with "Show".
But you are right, you cannot add new buttons. You have to create your own toolbar in order to do this.
What do you mean about new version? There is already a 2008 SP1 version of it.
Another way would be to manipulate the generated HTML at runtime via javascript. It's not very elegant, but it does give you full control over the generated HTML.
For VS2013 web ReportViewer V11 (indicated as rv), the code below adds a button.
private void AddPrintBtn()
{
foreach (Control c in rv.Controls)
{
foreach (Control c1 in c.Controls)
{
foreach (Control c2 in c1.Controls)
{
foreach (Control c3 in c2.Controls)
{
if (c3.ToString() == "Microsoft.Reporting.WebForms.ToolbarControl")
{
foreach (Control c4 in c3.Controls)
{
if (c4.ToString() == "Microsoft.Reporting.WebForms.PageNavigationGroup")
{
var btn = new Button();
btn.Text = "Criteria";
btn.ID = "btnFlip";
btn.OnClientClick = "$('#pnl').toggle();";
c4.Controls.Add(btn);
return;
}
}
}
}
}
}
}
}
I had this question for al ong time I I found the answer after a long tie and the main source of kowledge I used was this webpega: I'd like to thank you all guys adding the code that allowed me to do it and a picture with the result.
Instead of using the ReportViewer Class, you need to create a new classs, in my case, I named it ReportViewerPlus and it goes like this:
using Microsoft.Reporting.WinForms;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace X
{
class ReportViewerPlus : ReportViewer
{
private Button boton { get; set; }
public ReportViewerPlus(Button but) {
this.boton = but;
testc(this.Controls[0]);
}
public ReportViewerPlus()
{
}
private void testc(Control item){
if(item is ToolStrip)
{
ToolStripItemCollection tsic = ((ToolStrip)item).Items;
tsic.Insert(0, new ToolStripControlHost(boton));
return;
}
for (int i = 0; i < item.Controls.Count; i++)
{
testc(item.Controls[i]);
}
}
}
}
You have to add the button directly in the constructor of the class and you can configure the button in your designer.
Here's a pic of the result, not perfect, but enough to go(safe link I swear, but I can't post my own pics, don't have enough reputation).
http://prntscr.com/5lfssj
If you look carefully in the code of the class, you'd see more or less how it works and you could make your changes and make it possible to establish it in other site of the toolbar.
Thank you so much for helping me in the past, I hope this helps lots of people!
Generally you are suppose to create your own toolbar if you want to modify it. Your solution for removing buttons will probably work if that is all you need to do, but if you want to add your own you should probably just bite the bullet and build a replacement.
You may modify reportviewer controls by CustomizeReportToolStrip method.
this example remove Page Setup Button, Page Layout Button in WinForm
public CustOrderReportForm() {
InitializeComponent();
CustomizeReport(this.reportViewer1);
}
private void CustomizeReport(Control reportControl, int recurCount = 0) {
Console.WriteLine("".PadLeft(recurCount + 1, '.') + reportControl.GetType() + ":" + reportControl.Name);
if (reportControl is Button) {
CustomizeReportButton((Button)reportControl, recurCount);
}
else if (reportControl is ToolStrip) {
CustomizeReportToolStrip((ToolStrip)reportControl, recurCount);
}
foreach (Control childControl in reportControl.Controls) {
CustomizeReport(childControl, recurCount + 1);
}
}
//-------------------------------------------------------------
void CustomizeReportToolStrip(ToolStrip c, int recurCount) {
List<ToolStripItem> customized = new List<ToolStripItem>();
foreach (ToolStripItem i in c.Items) {
if (CustomizeReportToolStripItem(i, recurCount + 1)) {
customized.Add(i);
}
}
foreach (var i in customized) c.Items.Remove(i);
}
//-------------------------------------------------------------
void CustomizeReportButton(Button button, int recurCount) {
}
//-------------------------------------------------------------
bool CustomizeReportToolStripItem(ToolStripItem i, int recurCount) {
Console.WriteLine("".PadLeft(recurCount + 1, '.') + i.GetType() + ":" + i.Name);
if (i.Name == "pageSetup") {
return true;
}
else if (i.Name == "printPreview") {
return true;
}
return false; ;
}