RadGridView AllowAddNewRow Error

[Juan Antonio]

Hello,

I´m traying to use the AllowAddNewRow property of RadGridView but
i have an error when set to true this property.

The error ocurrs when you configures the grid with readonly columns property.
When you drag and drop the "Click here to add new row" cell to other readonly cell in diferent row.

this is my example

GridViewTextBoxColumn

 

txtEstatus = new GridViewTextBoxColumn();

 

txtEstatus.Name =

"Estatus";

 

txtEstatus.HeaderText =

"Estatus";

 

txtEstatus.ReadOnly =

true;

 

radGridView1.Columns.Add(txtEstatus);

 

GridViewTextBoxColumn txtot = new GridViewTextBoxColumn();

 

txtot.Name =

"OT";

 

txtot.ReadOnly =

true;

 

txtot.HeaderText =

"OT";

 

radGridView1.Columns.Add(txtot);

radGridView1.AllowAddNewRow =

true;

 

radGridView1.AutoSizeColumnsMode =

GridViewAutoSizeColumnsMode.Fill;

 

radGridView1.Rows.Add((

new List<string> {"333","333","dd","dd" }).ToArray());

 

to resolve this error i have to set each cell for this row to readonly




The error says Message= "No se puede convertir un objeto de tipo 'Telerik.WinControls.UI.GridViewDataRowInfo' al tipo 'Telerik.WinControls.UI.GridViewNewRowInfo'.

"Unable to cast object of type 'Telerik.WinControls.UI.GridViewDataRowInfo' to type 'Telerik.WinControls.UI.GridViewNewRowInfo'.

Source=Telerik.WinControls.GridView

and StakTrace

   en Telerik.WinControls.UI.GridNewRowBehavior.OnMouseUpLeft(MouseEventArgs e)
   en Telerik.WinControls.UI.GridRowBehavior.OnMouseUp(MouseEventArgs e)
   en Telerik.WinControls.UI.BaseGridBehavior.OnMouseUp(MouseEventArgs e)
   en Telerik.WinControls.UI.RadGridView.OnMouseUp(MouseEventArgs e)
   en System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   en System.Windows.Forms.Control.WndProc(Message& m)
   en System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   en Telerik.WinControls.RadControl.WndProc(Message& m)
   en System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   en System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   en System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   en System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   en System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   en System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   en System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   en System.Windows.Forms.Application.Run(Form mainForm)
   en Test.Program.Main() en C:\Users\TVAZTECA\Documents\Visual Studio 2008\Projects\Test\Test\Program.cs:línea 20

[Emanuel Varga]

Hello Juan,

I cannot replicate this exception, i have set the AllowAddNewRow property to true, and everything you said, but you shouldn't be able to drag the Row dedicated to creating a new row and in the Q2 2010 version i am using I could not manage to do that.

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

[Alexander]

Hello Juan,

Thank you for your question.

As Emanuel stated, the RadGridView control does not allow drag-drop of new row cells. The actual reason for the exception you receive is in a different part of your project. If you still cannot resolve it, please create a support ticket and attach your project to it. It will help us to investigate this issue further.

I am looking forward to your reply.

Kind regards,
Alexander
the Telerik team