Hitting Backspace In AJAX ComboBox Causes JavaScript Error?

Sep 16, 2010

I am using a ComboBox from the ASP.NET AJAX Toolkit (version for .NET 3.5) with values populated into its DataSource property.If I use my mouse to drop the combobox down and select a value, then highlight the value and click backspace, I get an error: Microsoft JScript runtime error: '_optionListItems[...].text' is null or not an objectMy DropDownStyle is set to "DropDown" so I should be able to have text in the control that does not exactly match one of the items in it. Therefore, I do not understand why I get this error. It seems to work perfectly otherwise.

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