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How to add columns to MultiComboBoxColumn within GridView in designer, unbound

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This is a migrated thread and some comments may be shown as answers.
John
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John asked on 20 Nov 2013, 02:43 PM
Hi, I have a RadGridViewTable set up in my designer, which contains a MultiComboBoxColumn and I was wondering how I add individual Columns to that MultiComboBoxColumn, manually (as i'm not using data binding) either within the code or through the designer (C#)?

Thanks. 

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Ralitsa
Telerik team
answered on 25 Nov 2013, 04:10 PM
Hi John,

Thank you for writing.

You can not add columns in GridViewMultiComboBoxColumn through designer or Property builder.  Although it is possible to access the editor in the CellEditorInitialized event and add columns and rows with data in it, this approach is not recommended, as the cells will display the value from the first column. 

The recommended approach is to have your data predifined in a DataTable and bind the column to this member. As a result, you can use the DisplayMember and ValueMember properties to customize the cells appearance and behavior.

I attached a sample project which demonstrates both ways. If you think that this solution does not solve your issue, please provide me with more detailed explanation about your case and I will do my best to answer you.

Let me know if I can assist you further.

Regards,
Ralitsa
Telerik
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