Thank you for writing.
I suppose that you are trying to access the text box in RadMultiColumnComboBox
. For this purpose use the MultiColumnComboBoxElement.TextBoxElement.TextBoxItem.TextBoxControl
If it is not the exact requirement please specify in details what is the exact element that you are trying to access. It would be greatly appreciated if you can provide a sample screenshot.
I hope this information helps. Should you have further questions I would be glad to help.
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