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How to solve trimming of text in the dropdown of ComboBox cell?
2 mins read
By default, the text in the dropdown of ComboBox cell in GridDataBoundGrid control gets trimmed when the text has more letters. When you want to set the size of dropdown based on the text size, you can use TextRenderer.MeasureString() in the CurrentCellShowingDropDown event.
C#
void gridDataBoundGrid1_CurrentCellShowingDropDown(object sender, GridCurrentCellShowingDropDownEventArgs e)
{
//Display the items without trimming.
if (this.gridDataBoundGrid1.Model.CurrentCellRenderer != null && this.gridDataBoundGrid1.Model.CurrentCellRenderer is GridComboBoxCellRenderer)
{
GridComboBoxCellRenderer listRenderer =
(GridComboBoxCellRenderer)this.gridDataBoundGrid1.Model.CurrentCellRenderer;
foreach (var item in items)
{
list.Add(TextRenderer.MeasureText(item, style.GdipFont as Font).Width);
}
list.Sort();
e.Size =new System.Drawing.Size(list[list.Count - 1],list.Count*10);
}
}
VB
Private Sub gridDataBoundGrid1_CurrentCellShowingDropDown(ByVal sender As Object, ByVal e As GridCurrentCellShowingDropDownEventArgs) 'display the items without trimming If Me.gridDataBoundGrid1.Model.CurrentCellRenderer IsNot Nothing AndAlso TypeOf Me.gridDataBoundGrid1.Model.CurrentCellRenderer Is GridComboBoxCellRenderer Then Dim listRenderer As GridComboBoxCellRenderer = CType(Me.gridDataBoundGrid1.Model.CurrentCellRenderer, GridComboBoxCellRenderer) For Each item In items list.Add(TextRenderer.MeasureText(item, TryCast(style.GdipFont, Font)).Width) Next item list.Sort() e.Size = New System.Drawing.Size(list(list.Count - 1),list.Count*10) End If End Sub
After applying the properties, the dropdown of ComboBox in GridDataBoundGrid is displayed in the following screenshot.
Figure 1: Output
Sample link:
C#: Dropdown Text
VB: Dropdown Text
