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databound combobox

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528 Jul 3,2002 10:04 AM UTC WinForms 0
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Tags: FAQ
Andrew Guy
Asked On July 3, 2002 10:04 AM UTC

Hi, I have an app that succesfully populates a combobox with a list of countries using a dataset and setting the .datasource and .displaymember properties. I have now set that combo box to be databound to a SQL Server table using: myCombo.DataBindings.Add("SelectedValue", dsMyDataSet.Tables(0), "fieldName") This works okay but if the record I'm editing/viewing has a NULL value for "fieldName" then I get the following useful message: "Additional information: Can't set the SelectedValue in a ListControl with empty ValueMember." I understand teh problem but how do deal with blank/null fields that are bound to combo/list boxes? All help appreciated. Thanks Andrew

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