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PODataGridViewComboBox value is not valid?
 

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    <p>I keep getting an error that states <code>DataGridViewComboBox value is not valid</code>. It seems like it is also in an endless loop: I will click ok and it will continuously keep popping up. I am running a program with a windows form application written in C# and .NET. Does anyone know how to fix this error?</p> <p>Here is some portions of my code:</p> <pre><code>// authorityTypeDataGridViewTextBoxColumn // this.authorityTypeDataGridViewTextBoxColumn.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.DisplayedCells; this.authorityTypeDataGridViewTextBoxColumn.DataPropertyName = "AuthorityType"; this.authorityTypeDataGridViewTextBoxColumn.DataSource = this.AuthorityTypeBindingSource; this.authorityTypeDataGridViewTextBoxColumn.DisplayMember = "Description"; this.authorityTypeDataGridViewTextBoxColumn.DisplayStyle = System.Windows.Forms.DataGridViewComboBoxDisplayStyle.ComboBox; this.authorityTypeDataGridViewTextBoxColumn.Frozen = true; this.authorityTypeDataGridViewTextBoxColumn.HeaderText = "AuthorityType"; this.authorityTypeDataGridViewTextBoxColumn.MaxDropDownItems = 100; this.authorityTypeDataGridViewTextBoxColumn.Name = "authorityTypeDataGridViewTextBoxColumn"; this.authorityTypeDataGridViewTextBoxColumn.Resizable = System.Windows.Forms.DataGridViewTriState.True; this.authorityTypeDataGridViewTextBoxColumn.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.Automatic; this.authorityTypeDataGridViewTextBoxColumn.ValueMember = "Value"; this.authorityTypeDataGridViewTextBoxColumn.Width = 121; // // AuthorityTypeBindingSource // this.AuthorityTypeBindingSource.DataMember = "AuthorityType"; this.AuthorityTypeBindingSource.DataSource = this.lookUpDataSet; </code></pre> <p>Does anyone have any suggestions?</p> <p>Here is the Handler:</p> <pre><code>private void TaskSummaryGrid_DataError(object sender, DataGridViewDataErrorEventArgs e) { MessageBox.Show(this, e.Exception.Message); e.Cancel = true; } </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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