I have a RadGridView:

As you can see, the grid is bound to a DataTable object called RecordList and the SelectedItem is bound to a DataRow object called CurrentRecord. The RecordList DataTable is generated dynamically and can have any combination of user-defined columns and rows. Because I don't know the columns ahead of time, I use AutoGenerateColumns to take care of that.

The first column will always be an ID column that identifies the row and is hidden from the user by canceling the AutoGenerateColumn event whenever the column header is "ID". The rest of the columns are user defined. 

Up to there, it all works. The problem comes when I need to create a custom column type to be auto-generated. Some columns, as defined by the user, need to display other UI controls such as buttons in the cell. To do this, I've created a RecordColumn class that extends Telerik.Windows.Controls.GridViewColumn. It is defined as follows:

Nothing fancy at the moment. Just trying to get it working so all it does is return an empty StackPanel to go in the cell when it's created. 

Now, here's my AutoGeneratingColumns event code, which I use to instantiate the RecordColumn.

The first time the RadGridView is loaded, everything looks fine. The user-defined columns are displayed as expected. If I do anything that causes the RecordList DataTable binding to update (such as adding or deleting a row), the AutoGeneratingColumns event fires again and doubles the columns. I can keep doing this, causing the columns to double every time. 

I can trace the AutoGeneratingColumns event being fired each time and it always (except for the "ID" column) goes into the code that creates a new RecordColumn. I'm guessing that's where it's creating the extra columns each time. Looking through the e.Column object though, I don't see anything that tells me I don't need to generate this column again. Each time the column type is RadGridViewColumn even if I've previously changed them all to RecordColumn, so that doesn't work. 

I have verified that my DataTable on the back-end only contains one set of the columns. This is purely on the UI side. 

If I don't use the custom column, everything works fine and when I update the binding the columns don't duplicate. 

var ds = new DataSeries();
ds.Definition.ShowItemToolTips = true;
ds.Definition.InteractivitySettings.HoverScope = InteractivityScope.Series;
ds.Definition.InteractivitySettings.SelectionScope = InteractivityScope.Series;

Hello,

per default the culture of the RadMaskedNumericInput is set to en-US, changing that to a suitable value initially is easy enough. But how do I use the system-culture instead?

Setting the culture for every single control (and there will be hundreds of them) when the program is started is hardly the way to go. I tried using the value "(Standard)" from the selection of cultures available in the culture-property, but that is not an excepted value for that property.

I'm currently using the trial version of the 2011 Q1 release.