前几天,公司同事有个需求需要对系统中的DataGrid控件的指定单元格(如图,申请人ID)进行禁用设置,尝试了很多次总是 整行整列的 禁用 没实现效果。 网上资料较少,没找到解决措施。
尽管silverlight的datagrid控件和 asp.net的名字相同,但很多方面还是不大一样的。
但是换个思维方式, 任何事务都是由对象 构成,Asp.net中的datagrid的单元格是cell对象,所以 silverlight的单元格 应该也是 一个对象,一种类型,可以通过一些方法被获取到。
多次尝试后通过以下的 代码方案简单明了的 找到了 目标条件的 单元格 DataGridCell对象。
前端xaml代码:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
1 <sdk:DataGrid x:Name="dataGrid" SelectionMode="Single" Grid.Row="1" Margin="-1,-1,-1,0" CopyingRowClipboardContent="dataGrid_CopyingRowClipboardContent" 2 AutoGenerateColumns="False" VerticalContentAlignment="Stretch" Loaded="dataGrid2_Loaded" 3 HorizontalContentAlignment="Stretch" Grid.ColumnSpan="2" CellEditEnded="dataGrid_CellEditEnded" 4 ColumnHeaderStyle="{StaticResource DataGridHeaderStyle}" LoadingRow="dataGrid_LoadingRow" BeginningEdit="dataGrid_BeginningEdit" 5 CurrentCellChanged="dataGrid_CurrentCellChanged"> 6 <sdk:DataGrid.Columns> 7 <sdk:DataGridTemplateColumn Width="100" Header="查询对象"> 8 <sdk:DataGridTemplateColumn.CellTemplate> 9 <DataTemplate> 10 <TextBlock Height="20" Margin="2,0" VerticalAlignment="Center" HorizontalAlignment="Left" 11 Text="{Binding QueryType, Converter={StaticResource QueryTypeConverter}, Mode=TwoWay}" /> 12 </DataTemplate> 13 </sdk:DataGridTemplateColumn.CellTemplate> 14 <sdk:DataGridTemplateColumn.CellEditingTemplate> 15 <DataTemplate> 16 <ComboBox ItemsSource="{Binding KeyNameList, Source={StaticResource QueryTypeConverter}}" 17 SelectedItem="{Binding QueryType, Converter={StaticResource QueryTypeConverter}, Mode=TwoWay}"/> 18 </DataTemplate> 19 </sdk:DataGridTemplateColumn.CellEditingTemplate> 20 </sdk:DataGridTemplateColumn> 21 <sdk:DataGridTextColumn Width="0.3*" Header="查询内容" Binding="{Binding Content}"/> 22 23 <sdk:DataGridTemplateColumn Width="70" Header="有无异常"> 24 <sdk:DataGridTemplateColumn.CellTemplate> 25 <DataTemplate> 26 <TextBlock Margin="2,0" VerticalAlignment="Center" HorizontalAlignment="Left" 27 Text="{Binding ResultDesc, Converter={StaticResource IsResultDescConverter}, Mode=TwoWay}" /> 28 </DataTemplate> 29 </sdk:DataGridTemplateColumn.CellTemplate> 30 <sdk:DataGridTemplateColumn.CellEditingTemplate> 31 <DataTemplate> 32 <ComboBox ItemsSource="{Binding KeyNameList, Source={StaticResource IsResultDescConverter}}" 33 SelectedItem="{Binding ResultDesc, Converter={StaticResource IsResultDescConverter}, Mode=TwoWay}" 34 Height="25"/> 35 </DataTemplate> 36 </sdk:DataGridTemplateColumn.CellEditingTemplate> 37 </sdk:DataGridTemplateColumn> 38 <!--<sdk:DataGridTextColumn Width="0.7*" Header="备注" Binding="{Binding Path=Remark}"/>--> 39 <sdk:DataGridTemplateColumn Width="0.7*" Header="备注"> 40 <sdk:DataGridTemplateColumn.CellTemplate> 41 <DataTemplate> 42 <TextBlock Text="{Binding Remark}" TextWrapping="Wrap" VerticalAlignment="Center"/> 43 </DataTemplate> 44 </sdk:DataGridTemplateColumn.CellTemplate> 45 <sdk:DataGridTemplateColumn.CellEditingTemplate> 46 <DataTemplate> 47 <TextBox Text="{Binding Remark, Mode=TwoWay}" AcceptsReturn="True" TextWrapping="Wrap"/> 48 </DataTemplate> 49 </sdk:DataGridTemplateColumn.CellEditingTemplate> 50 </sdk:DataGridTemplateColumn> 51 <sdk:DataGridTemplateColumn Width="45" Header="操作"> 52 <sdk:DataGridTemplateColumn.CellTemplate> 53 <DataTemplate> 54 <StackPanel Orientation="Horizontal" Height="22"> 55 <Image x:Name="btnAdd" ToolTipService.ToolTip="新增" MouseLeftButtonUp="btnAdd_MouseLeftButtonUp" Source="/CTOP2P;component/Assets/Image/Action_LinkUnlink_Link.png" Style="{StaticResource imgButton}"/> 56 <Image x:Name="btnCopy" Visibility="Collapsed" ToolTipService.ToolTip="复制" MouseLeftButtonUp="btnCopy_MouseLeftButtonUp" Source="/CTOP2P;component/Assets/Image/Action_Copy.png" Style="{StaticResource imgButton}"/> 57 <Image x:Name="btnDel" ToolTipService.ToolTip="删除" MouseLeftButtonUp="btnDel_MouseLeftButtonUp" Cursor="Hand" Source="/CTOP2P;component/Assets/Image/Action_Delete_12x12.png" Height="12" Width="12" Margin="2,0"/> 58 </StackPanel> 59 </DataTemplate> 60 </sdk:DataGridTemplateColumn.CellTemplate> 61 </sdk:DataGridTemplateColumn> 62 </sdk:DataGrid.Columns> 63 </sdk:DataGrid>
需要设置dataGrid_BeginningEdit事件。
后端代码:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
private void dataGrid_BeginningEdit(object sender, DataGridBeginningEditEventArgs e) {
var item = e.Row.DataContext as AuditQueryInfo;
if (item.QueryType.Equals("申请人ID")) {
var dataGrid = sender as DataGrid;
FrameworkElement fe = dataGrid.Columns[1].GetCellContent(item);
if (fe == null)
return;
FrameworkElement result = GetParent(fe, typeof(DataGridCell));
if (fe != null) {
DataGridCell cell = (DataGridCell)result;
cell.Foreground = new SolidColorBrush(Colors.Green);
cell.IsEnabled = false;
}
}
}
private FrameworkElement GetParent(FrameworkElement child, Type targetType) {
object parent = child.Parent;
if (parent != null) {
if (parent.GetType() == targetType) {
return (FrameworkElement)parent;
} else {
return GetParent((FrameworkElement)parent, targetType);
}
}
return null;
}
这样就能对指定条件的单元格进行获取操作了。
相关资料:
http://blog.csdn.net/jhqin/article/details/7645357/