我动态添加的ItemSource到DataGrid:如何为datagrid列添加模板?
datagrid.ItemsSource = _table.DefaultView;
foreach (DataColumn column in _table.Columns)
{
if (column.DataType == typeof(bool))
{
var dgrcl = new DataGridCheckBoxColumn
{
IsThreeState = false,
Header = column.Caption,
Binding = new Binding(column.ColumnName),
Width = new DataGridLength(15, DataGridLengthUnitType.Star)
};
datagrid.Columns.Add(dgrcl);
}
else
{
var dgrcl = new DataGridTextColumn();
dgrcl.Binding = new Binding(column.ColumnName);
dgrcl.Header = column.Caption;
datagrid.Columns.Add(dgrcl);
}
}
但是,如果我添加一个新行Datagrid的(与checkboxcolumn) - 复选框是三态。 我试图在XAML中添加下面的代码:
<Style TargetType="CheckBox" x:Key="dgrChkBoxStyle">
<Setter Property="IsThreeState" Value="False"></Setter>
<Setter Property="IsChecked" Value="True"></Setter>
</Style>
<DataGrid Name="datagrid" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" Margin="10" VerticalAlignment="Stretch" AlternatingRowBackground="Honeydew" AlternationCount="2" AutoGenerateColumns="False">
<DataGridCheckBoxColumn>
<DataGridCheckBoxColumn.ElementStyle>
<Style TargetType="CheckBox" BasedOn="{StaticResource dgrChkBoxStyle}"></Style>
</DataGridCheckBoxColumn.ElementStyle>
</DataGridCheckBoxColumn>
</DataGrid>
但有例外,说:“Items集合必须在使用ItemsSource前空”。
我在WPF是新的,请任何意见,如何使复选框只有两个状态?