I am useing the Entry control in vb.net xamarin form which is editable. To avoid any edit I used following code
IsReadOnly="True"
But then I am unable to copy that item after long press.
Please help how can I use that control or any other control which is non-editable but copiable.
Related
I have a set of controls which are added dynamically to a panel. The number of controls depends on which tab a user selects from TabPage control, which is embedded in a form.
At the moment, the controls don't appear in Designer, but appear during execution.
I managed to display controls for other forms which are not dynamic by moving the non-design code to the vb file, but how can I display the other ones?
The only answer that I know of is to add your code in the .Designer.vb file of the Form.
BUT! I strongly advise you to avoid that if you are not sure how it works! Custom code in the .Designer. files can break your form design and project with possible random crashes.
Also, your code can be changed and removed by the Visual Studio designer:
Custom code in designer.vb file goes away when making edits in design mode
Instead, you can make the panels into custom user controls and add those to the tabs.
I have textbox and a listbox. On typing into textbox, listbox will start populate suggestions based on text typed in textbox. The Listbox is inside a popup and will open only if there are any suggestions. A traditional custom auto suggestion box.
Now the problem is, when user started typing, the popup will open and steal the focus from textbox. So user cannot continue typing. What is the best and standard approach to solve this problem?
I tried focusing the textbox, as soon as the popup opens. But still it has a small lag (for the first time, when ListBox rendered) and I could see a flickering with virtual keypad jumping up and down.
It seems like you need to stop the text box from losing focus...
I am assuming you are using MVVM(Model View ViewModel) for your list box and text box. So I would have a search criteria value in my view model populate the list in the pop-up.
<TextBox Text="{Binding Path=SearchCriteria, Mode=TwoWay, UpdateSourceTrigger=Explicit}"></TextBox>
UpdateSourceTrigger is the key, by default text box only updates on lost focus But when you change the binding to UpdateSourceTrigger=Explicit, it will update the view model on every key stroke.
This way you can re-filter the list with every key stroke and the text box will not lose focus.
I am wanting to add an image to the top or background of a listbox. I would like it to be visible on the screen, but more importantly is that it prints. Can someone help me with the code for this. I tried to see if you could add it through properties and don't see that option. I need the listbox not listview. Also I was wondering if it could be added as a string and the file referenced at the top of the listbox (when you right click the little arrow and click edit options? Can someone please help. I am working on a project and still very new at this.
You need to create a custom ListBox class and add the ability to draw a custom background by overriding the OnPaint event, like on:
Source: http://www.vbforums.com/showthread.php?416784-2005-ListBox-Background-Image
I have a WinForm in a vb.net application. It has between 4 and 7 multiline textboxes. I want to be able to copy and paste information into or out of those textboxes but it appears to be impossible. There is no right-click cut copy or paste available and the keyboard shortcuts do not work either.
The properties of all textboxes are enabled, visible and have shortcuts enabled
Can anyone help please?
Create first a ContextMenuStrip.
Add new menuitem: 'Paste', set the menuItem's ShortcutKeys property to CTRL+V.
Set the (Rich)Textbox -> ContextMenuStrip property to created menu control.
Handle the 'Paste' menuitem click event.
Try the result.
Its seems to be a strange problem.Make sure that you are using the real textbox control and not some custom user control.
It is also possible that the changes you make in designer and code are not written into the exe.When you debug your project, you might be seeing an old version of your program in which the properties might be set to false. In that case you have to simply delete the exe in the bin\debug folder and rebuild your project.
I am developing the silverlight application. I am new to the silverlight 4. I am using the following link for reference in my accordion control
http://forums.silverlight.net/forums/p/166937/376318.aspx
In the above link with AccordionItem.Header I am able to show or hide the button control but I am not able to handle the click event on the button control in code behind. So I have used the AccordionItem.HeaderTemplate in my code. I have 4 buttons in my header control. I am able to show and hide the button by using the above link. With HeaderTemplate I am able to handle the click event on the button control in code behind. With HeaderTemplate I am not able to access the button control placed inside HeaderTemplate in code behind. I am getting the NullReferenceException error "The Object reference not set to an instance of the object" How to resolve the above issue ? Can you please provide me any code or link through which I can access the control placed inside the HeaderTemplate in code behind ? If I am doing anything wrong then please guide me.
You can enable the button in the header of datagrid with the following statement in code behind
accordiocntl.SelectionMode = AccordionSelectionMode.ZeroOrOne;
You can refer the link https://forums.silverlight.net/forums/p/134010/301229.aspx for more details