dataGrid第一列为模板列,模板列里放checkbox的有关问题

dataGrid第一列为模板列,模板列里放checkbox的问题
描述:header里有一个控制全选/全不选的checkbox,每一行第一列也是一个checkbox(可以单选一行),现在是界面上有一个按钮,当点击这个按钮的时候,DataGrid的所有checkbox都是不可编辑的,
在后台按钮点击事件的里,我这样写dataGrid1.IsReadOnly=true,没有起作用,每一行的checkbox仍然可以点击,请问该怎么办,或者其他方法来实现这个效果.

xaml代码是这样子的:

XML code

  <DataGrid Grid.Row="1" AutoGenerateColumns="False" Name="dataGrid1" DataContext="{Binding}" ItemsSource="{Binding}"
                  CanUserAddRows="False" AlternationCount="2" ColumnHeaderStyle="{StaticResource CenterDataGridColumnHeaderStyle}" HorizontalGridLinesBrush="#FFF0F0F0" VerticalGridLinesBrush="#FFF0F0F0" Grid.ColumnSpan="2" CanUserSortColumns="False" CanUserResizeRows="False" >
            <DataGrid.Background>
                <LinearGradientBrush EndPoint="1,0.5" StartPoint="0,0.5">
                    <GradientStop Color="#FFFFFFFC" Offset="0" />
                    <GradientStop Color="#FFD0D0D0" Offset="1" />
                </LinearGradientBrush>
            </DataGrid.Background>
            <DataGrid.Columns>

                <DataGridTemplateColumn Header="Replace?" IsReadOnly="False" MaxWidth="110" MinWidth="110">

                    <DataGridTemplateColumn.HeaderTemplate>
                        <DataTemplate>
                            <CheckBox Checked="ckbSelectedAll_Checked" Margin="0,0" Name="ckbSelectedAll" Unchecked="ckbSelectedAll_Unchecked">Replace?</CheckBox>
                        </DataTemplate>
                    </DataGridTemplateColumn.HeaderTemplate>
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <CheckBox HorizontalAlignment="Center" IsChecked="{Binding Path=IsReplace, Mode=TwoWay}" VerticalAlignment="Center" Name="checkbox1" Checked="CheckBox_Checked" Unchecked="CheckBox_Unchecked"/>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>


                </DataGridTemplateColumn>

                <DataGridTextColumn Header="FileName" Width="Auto" Binding="{Binding Path=fileName}" MinWidth="100" IsReadOnly="True"/>
                <DataGridTextColumn Width="*" Binding="{Binding Path=fullName}" Header="Path" MinWidth="320" IsReadOnly="True"/>
                <DataGridTemplateColumn MinWidth="50" Width="Auto" Header="%" IsReadOnly="True">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <uc1:ucProgress x:Name="Progress"></uc1:ucProgress>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTextColumn Width="Auto" Binding="{Binding Path=sizeString}" Header="Size" MinWidth="80" CellStyle="{StaticResource RightCellStyle}" IsReadOnly="True"/>
            </DataGrid.Columns>
            <DataGrid.AlternatingRowBackground>
                <LinearGradientBrush EndPoint="1,0.5" StartPoint="0,0.5">
                    <GradientStop Color="#FFF0F0F0" Offset="0" />
                    <GradientStop Color="#FFD0D0D0" Offset="1" />
                </LinearGradientBrush>
            </DataGrid.AlternatingRowBackground>
        </DataGrid>

dataGrid第一列为模板列,模板列里放checkbox的有关问题

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