I'm wanting to print a UserControl that binds to a view model. I create the control in code because if I don't it prints off the edge of the page. Apparently, there is no way to control the size or scale of a printed UIElement without screwing up the element that is on the Silverlight page. So I create the 'UserControl' with the following code in the PrintPage event of a PrintDocument:
private void OnPrintPage(object sender, PrintPageEventArgs e)
{
PurchaseReceipt purchaseReceipt = new PurchaseReceipt();
purchaseReceipt.DataContext = _receiptData;
purchaseReceipt.Visibility = System.Windows.Visibility.Visible;
purchaseReceipt.Margin = new Thickness(25.0);
purchaseReceipt.Width = e.PrintableArea.Width - 50.0;
e.PageVisual = purchaseReceipt;
}
The problem is that binding doesn't work, or doesn't work in time. Is there a way to force an element to bind?
Related
I have a form that i set it's Opacity as 50% like this:
this.Opacity = 0.5D; <--this==Form
My problem is that everything that on the form is with an Opacity of 50%
I have two buttons on the form and I want them without Opacity.
I know that this.Opacity included all Controls and for some reason the graphics too
My question is, How to Exclude the Opacity of the controls?
Example Image:
Thanks!
Since Control doesn't have Opacity property and plus that, most of the controls doesn't support transparent colors, then a working solution can be this:
Create a Form called MainForm and place all the controls you're going to be excluded.
1.1 Set both of BackColor and TransparencyKey properties of MainForm to the same color, e.g Color.Red
Create another form named TransparentForm and place all controls that must become transparent. Set ShowInTaskbar property to False.
In the MainForm Load event show the TransparentForm and send it to back.
private void MainForm_Load(object sender, EventArgs e)
{
TransparentForm form = new TransparentForm();
form.Opacity = 0.5D;
form.Show();
form.SendToBack();
}
The position of controls in both form must be such that, when combined, it shows the proper user interface.
Crate a C# project and add 3 forms named
MAIN
BACKGOUND
Child
and add the following code for "MAIN" form load event;
private void MAIN_Load(object sender, EventArgs e)
{
Child frm1 = new Child();
BACKGOUND frm2 = new BACKGOUND();
frm2 .WindowState = System.Windows.Forms.FormWindowState.Maximized;
frm2.Opacity = 0.5;
frm2.Show();
frm1.ShowDialog();
frm2.Close();
}
In my C# Form I have a Label that displays a download percentage in the download event:
this.lblprg.Text = overallpercent.ToString("#0") + "%";
The Label control's BackColor property is set to be transparent and I want it to be displayed over a PictureBox. But that doesn't appear to work correctly, I see a gray background, it doesn't look transparent on top of the picture box. How can I fix this?
The Label control supports transparency well. It is just that the designer won't let you place the label correctly. The PictureBox control is not a container control so the Form becomes the parent of the label. So you see the form's background.
It is easy to fix by adding a bit of code to the form constructor. You'll need to change the label's Parent property and recalculate it's Location since it is now relative to the picture box instead of the form. Like this:
public Form1() {
InitializeComponent();
var pos = label1.Parent.PointToScreen(label1.Location);
pos = pictureBox1.PointToClient(pos);
label1.Parent = pictureBox1;
label1.Location = pos;
label1.BackColor = Color.Transparent;
}
Looks like this at runtime:
Another approach is to solve the design-time problem. That just takes an attribute. Add a reference to System.Design and add a class to your project, paste this code:
using System.ComponentModel;
using System.Windows.Forms;
using System.Windows.Forms.Design; // Add reference to System.Design
[Designer(typeof(ParentControlDesigner))]
class PictureContainer : PictureBox {}
You can just use
label1.Parent = pictureBox1;
label1.BackColor = Color.Transparent; // You can also set this in the designer, as stated by ElDoRado1239
You can draw text using TextRenderer which will draw it without background:
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
TextRenderer.DrawText(e.Graphics,
overallpercent.ToString("#0") + "%",
this.Font,
new Point(10, 10),
Color.Red);
}
When overallpercent value changes, refresh pictureBox:
pictureBox1.Refresh();
You can also use Graphics.DrawString but TextRenderer.DrawText (using GDI) is faster than DrawString (GDI+)
Also look at another answer here and DrawText reference here
For easy for your design.
You can place your label inside a panel. and set background image of panel is what every image you want. set label background is transparent
After trying most of the provided solutions without success, the following worked for me:
label1.FlatStyle = FlatStyle.Standard
label1.Parent = pictureBox1
label1.BackColor = Color.Transparent
You most likely not putting the code in the load function. the objects aren't drawn yet if you put in the form initialize section hence nothing happens.
Once the objects are drawn then the load function runs and that will make the form transparents.
private void ScreenSaverForm_Load(object sender, EventArgs e)
{
label2.FlatStyle = FlatStyle.Standard;
label2.Parent = pictureBox1;
label2.BackColor = Color.Transparent;
}
One way which works for everything, but you need to handle the position, on resize, on move etc.. is using a transparent form:
Form form = new Form();
form.FormBorderStyle = FormBorderStyle.None;
form.BackColor = Color.Black;
form.TransparencyKey = Color.Black;
form.Owner = this;
form.Controls.Add(new Label() { Text = "Hello", Left = 0, Top = 0, Font = new Font(FontFamily.GenericSerif, 20), ForeColor = Color.White });
form.Show();
Using Visual Studio with Windows Form you may apply transparency to labels or other elements by adding using System.Drawing; into Form1.Designer.cs This way you will have Transparency available from the Properties panel ( in Appearance at BackColor ). Or just edit code in Designer.cs this.label1.BackColor = System.Drawing.Color.Transparent;
I tried to make a tabbed web browser with geckofx. This is my code to make a new tab:
Dim t As New TabPage
Dim bro As New GeckoWebBrowser
bro.Dock = DockStyle.Fill
t.Text = "New Tab"
t.Controls.Add(bro)
TabMain.TabPages.Add(t)
TabMain.SelectedTab = t
bro.Navigate("http://www.google.com")
Now, how to handle DocumentCompleted and DocumentTitleChanged in GeckoWebBrowser? I want to show message if DocumentCompleted event triggered and change window title if DocumentTitleChanged event triggered.
Not sure about the vb.net syntax, but the principle is simple (and it should be fairly simple to transfer from c# to vb)
So, for example:
1) attach an event handler to your browser
browser.DocumentCompleted += browser_DocumentCompleted;
2) generate the method that will do what you need:
void browser_DocumentCompleted(object sender, Gecko.Events.GeckoDocumentCompletedEventArgs e)
{
GWB browser = (GWB)sender;
if (browser.Document == null) return;
//do anything you wanna do when document is completed
AnyMethodBasedOnBrowser(browser);
//e.g. access GUI elements by property binding
TabTitle = "Complete";
//or even alternatively access the control directly
var TabControl = browser.Parent;
//etc etc
}
That should do the trick for you!
I'm trying to do a loading icon where once you tap on the icon, it will call the following handler:
private void refresh_btn_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
refresh_btn.Visibility = System.Windows.Visibility.Collapsed;
loading_icon.Visibility = System.Windows.Visibility.Visible;
refreshMix();
}
private void refreshMix()
{
...
refresh_btn.Visibility = System.Windows.Visibility.Collapsed;
loading_icon.Visibility = System.Windows.Visibility.Visible;
}
However, the view doesn't seem to auto-reload after I change the icon visibilities before calling refreshMix(). Is there a way to force the page to reload itself?
You are probably doing some lengthy work in refreshMix() in UI thread, right? Do this work in background thread and UI thread will be free to update page.
You need set Collapsed before Visible :
control.Visibility = System.Windows.Visibility.Collapsed;
control.Visibility = System.Windows.Visibility.Visible;
Within Silverlight there is no concept of page or view re-loading. When you change the properties of any visual element, this will be reflected on the screen the next time it is rendered.
I'm trying to speed up my windows phone 7 page load times. I have a 'static' page that has a dynamically created in a Panorama control - static meaning that the content never changes.
On the first load I look at my config file, create the individual PanoramaItem controls and add them to the main Panorama control. I'm trying to keep a List in a static place so that the initial creation would only happen once and I could just add a fully rendered version to my Panorama control when the page was rendered.
Works fine on first load, but when I try to add the cached PanoramaItems to the Panorama control I get the message "Element is already the child of another element". This makes sense since I already added before. But I can see a way to disconnect the PanoramaItems with the first Panorama control...
I could be going about the control caching thing all wrong as well... Let me know if there's another way to do this.
You can use Panorama.Items.Remove(pivotItem) for this
As an example
With the following page fields
PanoramaItem pi;
bool blahShown = false;
On the press of this button, the control is first instantiated and displayed and on subsequent presses removed and readded without instantiation.
private void button1_Click(object sender, RoutedEventArgs e)
{
if (pi == null) {
pi = new PanoramaItem();
pi.Header = "blah";
}
if (blahShown) {
Pano.Items.Remove(pi);
blahShown = false;
} else {
Pano.Items.Add(pi);
blahShown = true;
}
}