Hello, I'm trying to create a grid that allows editing when I click a command column button but only for that row, all other rows should stay read-only to reduce human error.  Any ideas?

Thanks,
Jason

I have a grid view, which values can be edited by the user. I want to refresh the content of the grid, if the user changes the value of the cell. So say I have : 

1, 2, 3 as the initial state. If the user changes the value 2 to 5, i want the values in the grid to show , 1,5,6. ( this is a new list that's get assigned as data source to the gridview )

My understanding is that in order to refresh the grid. One has to create a new reference of the list and reasign it to the data source. 

When this is done in the CellValueChanged event, the gridview crashes, with the following error. 

How does one refresh the grid view after a value has changed ? 

- Thanks 

Steps to get the error : 

1. Create a GridView 
2. Assign it for data source a list of your favorite object. Strings or what not. 
3. Add a handler for the CellValueChanged. 
4. On the CellValueChanged handler, asign a new list of strings of your  to the grid's data source. 
5. Build start. Edit a cell, and hit enter. 

Error Message. 

   at Telerik.WinControls.UI.GridViewEditManager.EndEditCore(Boolean validate, Boolean cancel)
   at Telerik.WinControls.UI.GridViewEditManager.EndEdit()
   at Telerik.WinControls.UI.RadGridViewElement.EndEdit()
   at Telerik.WinControls.UI.GridRowBehavior.ProcessEnterKey(KeyEventArgs keys)
   at Telerik.WinControls.UI.GridRowBehavior.ProcessKey(KeyEventArgs keys)
   at Telerik.WinControls.UI.BaseGridBehavior.ProcessKey(KeyEventArgs keys)
   at Telerik.WinControls.UI.BaseGridBehavior.ProcessKeyDown(KeyEventArgs keys)
   at Telerik.WinControls.UI.BaseGridEditor.OnKeyDown(KeyEventArgs keyEventArgs)
   at Telerik.WinControls.UI.GridSpinEditor.OnKeyDown(KeyEventArgs e)
   at Telerik.WinControls.UI.GridSpinEditor.spinElement_KeyDown(Object sender, KeyEventArgs e)
   at Telerik.WinControls.RadItem.OnKeyDown(KeyEventArgs e)
   at Telerik.WinControls.UI.RadSpinElement.OnKeyDown(KeyEventArgs e)
   at Telerik.WinControls.UI.RadSpinElement.textItem_KeyDown(Object sender, KeyEventArgs e)
   at Telerik.WinControls.RadItem.OnKeyDown(KeyEventArgs e)
   at Telerik.WinControls.UI.RadTextBoxItem.TextBoxControl_KeyDown(Object sender, KeyEventArgs e)
   at System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
   at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
   at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
   at System.Windows.Forms.Control.WmKeyChar(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.TextBoxBase.WndProc(Message& m)
   at System.Windows.Forms.TextBox.WndProc(Message& m)
   at Telerik.WinControls.UI.HostedTextBoxBase.WndProc(Message& message)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at Watson.ModelingTool.Main() in C:\Development\Watson\GL.Desktop\ModelingTool\ModelingTool.cs:line 45

Hey at Telerik

I have a problem when binding gridview to a List<Car>.
The Car object contains two objects Engine and CarColor.

If an Engine or CarColor is initialized on the car object the e.Value in the

 

rgvCars_CellEndEdit event is correctly changed and parsed and object is updated.

If no Engine or CarColor object is initialized on the Car object and i try to set for instance and engine in the combobox, the e.Value in  the rgvCars_CellEndEdit event is null and the object is not updated.

How do i set an Engine or CarColor on the Car object if there's no Engine or CarColor initialized ??

I have include an example (Without an assembly) that shows the problem at hand when you try to select for intance an Engine on the Car that doesn't have an Engine object initialzed.

Link to example. http://kort2.lifa.dk/Examples/GridViewCellEndEditIssue.zip

Sincerly Jan

Hi, I have a button and I have setted up an image that is bigger than the button.
Is there a posibility from ImageScalingSize property to display the image at the same size like the button is?

Also I have attached an image
Thanks

Hi all,
I using wraptext to format a header like:
rgvBob.Columns(6).Width = 60
rgvBob.Columns(6).HeaderText = "Internal Diameter"
rgvBob.Columns(6).WrapText = True

and the grid works fine, but when I use a ViewDefinition in my grid, the propertie wraptext above is ignored and the header doesn´t show the text in 2 lines.
There are some properties in ViewDefinition to do a wraptext in header?

tks,
Nelson

How can I stop the items in the carousel from rotating?

I tried setting AnimationsToApply to None, but then all my items appeared stacked on top of each other. I also tried setting EnableLooping to False, and that seemed to do the trick. After selecting an Item I'd display a form, when the user closed the form, the carousel was no longer rotating (or looping), however, one slight issue occurred-- two of the items appeared stacked on top of each other.

I want the items to appear in a carousel-like circle, but I just don't want them to rotate, because some of my users are finding it annoying.

Hello all!

I have radPageView1, I create 3 radPageViewPage.  In radPageViewPage, I create radButtons.

Now, I want find that radbutton when i click.

Help me!
Thanks!

Hi

I would like to delete some rows on condition.
My Grid don't use database and is filled by code

So I want to delete all row where column named "ColA" = "b"

I work with VB...

Hi
Try this.
DropDownList.AutoCompleteMode = SuggestAndAppend
Then Bind it to a datasource.
so now open the popup of DropDownList, and NOW start writing (for testing the autocomplete).
you will see that popup still is open and autocomplete list will open too,
It`s easy to close the popup in code to shown only suggestion list, but if it`s a bug I think it`s better you to fix that up in newx releases
I think it`s unwanted to have both openned at the same time

thank you

Does anybody have the same problem with the Office 2010 Blue theme?
The position of the radRibbonBar.RibbonBarElement.ApplicationButtonElement is 2 pixels to low.
I am not sure if this behavior was also present in Q1 2011.
I have tried to correct it programtically by shifting the Location property, but it doesn't help.
Is there any solution without definining a custom theme?