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How to set the default display text for GridComboBox column in WPF DataGrid (SfDataGrid)?
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The GridComboBoxColumn does not have direct support to display default text on it when there is no selected Item in WPF DataGrid (SfDataGrid). You can change the default text using ComboBoxValueConverter and DisplayBinding property of the column.
<Window.Resources>
<local:ComboBoxValueConverter x:Key="comboBoxValueConverter"/>
</Window.Resources><syncfusion:SfDataGrid Name="dataGrid"
AutoGenerateColumns="False"
AllowEditing="True"
ColumnSizer="Auto"
ItemsSource="{Binding Employees}">
<syncfusion:SfDataGrid.Columns>
<syncfusion:GridTextColumn MappingName="FirstName" HeaderText="First Name" ColumnFilter="DisplayText" />
<syncfusion:GridTextColumn MappingName="LastName" HeaderText="Last Name" />
<syncfusion:GridTextColumn MappingName="ID"/>
<syncfusion:GridTextColumn MappingName="Title" />
<syncfusion:GridTextColumn MappingName="Salary" />
<syncfusion:GridComboBoxColumn MappingName="ReportsTo" HeaderText="Reports To" ItemsSource="{Binding Reporters}" DisplayBinding="{Binding Path=ReportsTo, Converter={StaticResource comboBoxValueConverter}}"/>
</syncfusion:SfDataGrid.Columns>
</syncfusion:SfDataGrid>
public class ComboBoxValueConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (string.IsNullOrEmpty(value.ToString()))
value = "Select a Value";
return value;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
