如何删除所有DataGrids的选择？

Question

我有一个StackPanel，包含三个不同的DataGrid，这是结构：

<StackPanel orientation="Vertical" x:Name="DataGridContainer">
    <DataGrid />
    <DataGrid />
    <DataGrid />
</StackPanel>

每个DataGrid绑定不同的ItemSource，每个DataGrid绑定相同的SelectionChanged事件。

我需要做的是从所有DataGrid中删除Selection，除了点击的那个。

假设SelectionChanged事件是这样的：

private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    /*
       1. Get the DataGrid selected by the user
       2. Get all the DataGrids contained in DataGridContainer
       3. Iterate over all controls and remove the selection except for the DataGrid saved on the step1
    */
}

如何获取DataGridContainer的所有DataGrid并应用此逻辑？

UPDATE

我尝试了什么：

var datagrid = (DataGrid)sender;
var datagridList = DataGridContainer.Children.OfType<DataGrid>();

foreach(var dt in datagridList)
{
    if(dt != datagrid)
    {
         dt.UnselectAll();
    }
}

似乎没有工作，datagridList是空的

谢谢你的帮助。

Answer 1

UnselectAll()触发了新的SelectionChanged事件。试试这个：

<StackPanel Orientation="Vertical" x:Name="DataGridContainer"
            DataGrid.SelectionChanged="DataGridContainer_SelectionChanged"
            xmlns:s="clr-namespace:System;assembly=mscorlib">
    <DataGrid>
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding}" />
        </DataGrid.Columns>
        <s:String>A</s:String>
        <s:String>A</s:String>
        <s:String>A</s:String>
    </DataGrid>
    <DataGrid>
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding}" />
        </DataGrid.Columns>
        <s:String>B</s:String>
        <s:String>B</s:String>
        <s:String>B</s:String>
    </DataGrid>
    <DataGrid>
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding}" />
        </DataGrid.Columns>
        <s:String>C</s:String>
        <s:String>C</s:String>
        <s:String>C</s:String>
    </DataGrid>
</StackPanel>

---

private bool _handle = true;
private void DataGridContainer_SelectionChanged(object sender, RoutedEventArgs e)
{
    if (_handle)
    {
        var datagrid = e.OriginalSource as DataGrid;
        if (datagrid != null)
        {
            var datagridList = DataGridContainer.Children.OfType<DataGrid>();
            foreach (var dt in datagridList)
            {
                if (dt != datagrid)
                {
                    _handle = false;
                    dt.UnselectAll();
                    _handle = true;
                }
            }
        }
    }
}