Hello,

I'm new to the SpreadSheet control, I have used the standard example WPF code to create it as a user control.

Then I use this control in a RadWindow, and I want to add the data from DataTable from a database table with 72 columns and 110000 rows.

I use a simple loop to do this, since I have understood that databinding is not possible with a datatable on the SpreadSheet control.

When I try to load the data I get this message System.OutOfMemoryException.

I have browsed these posts, and so I also limitted the number of visble rows and columns to 80 x 100 but without success.

Can anyone tell me how I can do this correctly?

Basically I already moved away from the RadGridView since the RadGridView can not save to a Xlsx anymore, and the files that are generated are either not recognized by excel, or take too long too open with Excel.

So if anyone can give me a good way to export preferably with an intermediate grid, or otherwise a datatable to Excel in a Fast way, that keeps all the correct data types, and opens fast in Excel that would also be very helpfull. 

Thanks,

André

Hello Telerik,

I am implementing a feature which consists of a list of user controls that can be dragged to dock panels.

At the moment there are two feature I need to implement. I've described the first one here http://www.telerik.com/forums/remove-the-not-allowed-icon-on-drag

then I also need to prevent the drag & drop of an item of the tree to itself.

Basically I need to restrict the drag&drop from tree to dockpanels only.

I will attach a screen shot of what i wish to prevent and my source code below

XAML

Code behind

Thank you

Hi 

Iam using GridViewToggleRowDetailsColumn ,in that column I am showing one user control. I tried to set the width of usercontrol to the width of the row but it is not working.

 <MyUserControl:MyControl Width="{Binding Width,RelativeSource={RelativeSource AncestorType=telerik:GridViewRow}}" />

I didn't Keep any width property for my usercontrol.

Please suggest how can I achieve?

Hello Telerik,

I am implementing a feature which consists of a list of user controls that can be dragged to dock panels.

however, as you can see in the attached picture, there is this red "not allowed"-like icon showing, although the functionality works fine.

I just need to remove that icon. is there a way to do so?

Thank you

Hello Telerik,

I came across a scenario of which i need to change the mouse cursor (from pointer to hand) if the user hovers a specific type of cell.

After browsing your forums, I found the following solution:

It works, however, the cursor will remain a pointer when trying to resize the column widths.

is there an easy way to prevent this? to have the user being able to resize the columns once again?

Thank you

I am using a GridView.

I am trying to tab from one control to the next, but I am forced to hit 'tab' twice.

First click of tab key gives the GridViewDataColumn focus, then the next gives the focus to the control in the GridViewDataColumn.

How do I avoid this and just let each tab go from one textbox to the next (avoid hitting tab twice by also giving focus to the cell)?

GridViewDataColumn.TabStopMode="Skip" does nothing!

GridViewDataColumn.Focusable="False" also does nothing!

Hey, Guys.

While using Raddiagram, I wonder how can if user draws his connector with shift key pressed, then drawed connector would be orthogonal. Without setting RouteConnection property true.

(while ActiveTool = MouseTool.ConnectorTool)

Is any approaching to get this feature?

Thanks.