Grid columns with DataSource
expect valid values according to the specified DataSource
collection. All other free user's input is ignored. This is designed behavior.
However, we already have an article in the online documentation demonstrating how to allow free data in the RadDropDownListEditor
used in the GridViewMultiComboBoxColumn
. Here is the article for your reference. You can use a similar approach for the RadMultiColumnComboboxElement
used in the RadMultiColumnComboboxElement
. The main point is that the free user's input has to be added to the DataSource
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Get quickly onboarded and successful
with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.