I have a CheckedListBox with a few items and I want to allow user to select more than one using arrows keys or mouse clicks combined with shift and ctrl keys so I set SelectionMode property to MultiExtended.
In design time it is not possible I get an error:
value property is not valid.
and if I set it in runtime by doing:
clbEmployees.SelectionMode = SelectionMode.MultiSimple
I get an error too:
CheckedListBox is not compatible with multiple selection.
How could I do this?
It's not supported for the CheckedListBox.
However, I'm fairly sure that you could mimic that functionality in a ListView. Just look at the CheckBoxes and MultiSelect properties of the Listview. As far as I can tell from the documenation those are compatible.
This might be too late, but I just put my solution here; Works perfect for me:
1- Just leave the CheckedListBox Selection mode as "ONE' in property sheet.
2- in your code, loop thru the checked item in your checked Box using the checked item property as following:
For each XX as 'DataTpe' in CheckedListBox.CheckedItems
'Here you assign each checked item to wherever you want to direct to'
Next
Related
I have some very (very) basic MS Access knowledge. I'm trying to expand a bit into either VBA or macros as I'd like to put in some conditional visibility for my form. Basically, I have a checkbox. If it's checked, I want three or four more fields to pop up. Someone was able to point me to a basic VBA formula of if (this checkbox) = true then, (fieldx).visible = true, else, (fieldx).visibility = false, end if.
But I'm so new to this that I need more help and explanation. I tried putting it in but couldn't get it to work (no error message, just nothing changed at all).
Specific questions:
-Does this formula seem right?
-If I want multiple fields to be visible, can I combine them into one formula or should I create a new "if" statement for all?
-Where do I enter this code? I'm running the Office 365 version. For all I know, I'm not even putting it in the right place.
-How do I determine the field names to replace the (this checkbox) and (fieldx) in the formula? I tried entering the name I title the fields as, but with the spaces in the name I got an error message, and without the spaces nothing happened. Is there a specific naming convention to turn the field names into formula-appropriate titles? Is the name listed somewhere?
-Once I get the formula entered, is there something I have to do to get it to run/take effect? I tried saving, closing and reopening with no changes.
-Is this the best way to go about this?
If there's anything else you think I should know, I would love to hear it - but please keep in mind I'm very new to this so if you could keep it at "dummy" or ELI5 levels of explanation, I'd appreciate it!
after creating a form with 4 textboxes and a checkbox put the form in design mode (lower right corner has design mode selected, select a textbox and hit property sheet on the ribbon (or f4).
On the property sheet note the visible property. set the visible property to false. Now the textbox will be invisible when the form starts.
Tip you can select all the textboxes at the same time and set their properties all at once.
Every control on the form and even the various parts of the form have properties you can set and play with. For instance you can give any name you want to any control. On the property sheet go to the other tab and set the name property.
Tip: choose a name you you will remember without having to look it up and describes the controls function.
Next select the checkbox (not the checkbox's label). On the property sheet go to the event tab and select the on click event. hit the ellipsis and choose code builder. Access is Event Driven. We want the textboxes to appear when the checkbox is selected so we put that code in the checkbox click event.
after choosing code builder we get the code window where we can browse among all the events for all our forms. for now all you should see is something like:
Private Sub mycheckbox_Click()
End Sub
So insert some code to handle the checkboxes like:
Private Sub mycheckbox_Click()
If mycheckbox = True Then
txtbox1.Visible = True
txtbox2.Visible = True
txtbox3.Visible = True
txtbox4.Visible = True
Else
txtbox1.Visible = False
txtbox2.Visible = False
txtbox3.Visible = False
txtbox4.Visible = False
End If
End Sub
now when the checkbox is not checked no textboxes are visible.
but when the checkbox is checked they appear
I have a combobox where I'll need to allow user to search by text and be able to select that value from the list. So what I'm currently doing is, on CBO_KeyPress, I open the drop down.
Me.cboNames.DroppedDown = True
I set the property of the cbo...
AutoCompleteMode=SuggestAppend
DropDownStyle = DropDown
AutoCompleteSource=ListItems
Everything works beautifully except for one issue. As it stands, i have items in the drop down where the width is significantly wider than the combobox - I have a function that adjusts the DropDownWith to longest string in the list of items. My concern is that while this helps user search for correct item, it's width is only as wide as the combobox. Is there a way to adjust this?
My only other option is to not use AutoCompleteSource=ListItems and instead simply open the dropDown programmatically on KeyPress or something. In this case, it doesn't do as good of a job of filtering the items. AutoCompleteSource does it beautifully but the width issue does not make it look right.
EDIT : Plutonix - here's what I did. I changed AutoCompleteSource=None. On CboName_KeyPress I open dropdown programmatically. Now I type in text, see image below....
It doesn't find text 100% of the time as you can see. AutoCompleteSource narrows it down and only shows you the items that begin with the same text as typed by user but the width is the issue. It actually looks much better with AutoCompleteSource because if they type in text that's not in the list of items then it shows nothing - and user known it's not in the list.
Users tab into the filed and start typing text. They don't open it. That's why they want this to be updated like that. I want them to see the items as they type in.
Is it possible lock the combobox so that the text can not be deleted/erased or modified. And make only choose the items? Thank you in advance. Hope is it possible.
Set the "DropDownStyle" property of the combobox to DropDownList.
This will allow only items in the list to be selected and will not allow any user input:
Option 1
Simply set the ComboBox.Enabled to False - that way they can't change the values!
Option 2
Otherwise, use the dropDownStyle:
make DropDownStyle property to DropDownList instead of DropDown
For more information
Read this article (yes, it's written in c#, but the properties are the same!)
the above image displays this quite well.
EDIT
There is also a question previously asked here that asked a similar question.
You can set ComboBox.DropDownStyle to ComboBoxStyle.DropDownList.
Background:
Hello everyone, I'm not new to visual basic or programming. I just find it the fastest to make a GUI in visual basic for various programs; however, I'm having a recent issue.
I have a form with a ListView control that I populate using a textbox and a button.
the code I use for the button is:
Code:
listview1.items.add(textbox2.text)
Pretty simple code that has always worked. I changed a few properties on my ListView as well, and I will list them. I just don't know what is going on.Here's a list of the properties changed (everything else is default):
Properties:
BackColor = DarkGray
BorderStyle = FixedSingle
HeaderStyle = None
MultiSelect = False
View = Details
All properties were changed via the properties tab and not through code. I want to be able to add text to the control. I'm not adding any subitems either. I'm just confused because this code has always worked, and I've never had this issue. I'm also using Visual Basic 2010 Express Edition if that helps.
If the added item in ListView is not displaying then check the ListView.View property. if this property has set to Detail view then Columns must be added in that listView control otherwise added item will not display.
Make sure item is added correctly.
Dim item As ListViewItem = listView1.Items.Add("Item Text") ' This text will be displayed in first column. The column index will be 0
' Further values will be added in SubItem
item.SubItems.Add("Sub Item1")
item.SubItems.Add("Sub Item2")
item.SubItems.Add("Sub Item3")
is there a method of setting up my datagridview to show me textboxcolumns until editmode is entered? At which time I will swap some textboxcolumns for bound comboboxcolumns. And at the end of validation/exit edit mode I can swap back?
If there's a method of doing this please share some links to examples.
I wouldn't try to switch DataGridView ColumnTypes like that. Sounds like a bad time.
Is your goal to have a DataGridViewComboBoxColumn that does not display the ComboBox dropdown button when it's not being edited? If so, there are two options:
Set the column's DataGridViewComboBoxColumn.DisplayStyleForCurrentCellOnly property to True.
Create your own DGV column based on the ComboBox by extending DataGridViewTextBoxCell. MSDN has a great article for doing this with the Calendar control here.
Of course you can. In the properties of the datagridview you can drill down to the column proprieties and switch the datatype to combo box. Very straight forward and easy.