WPF DataGrid地圖鼠標中鍵點擊Ctrl +左鍵點擊

Question

我想實現一個功能，點擊鼠標中鍵與使用Ctrl +左鍵相同。

這將讓用戶只需用鼠標中鍵選擇多個單元格。

Answer 1

在您的標記，勾一下處理器的PreviewMouseDown事件：

<DataGrid x:Name="MyDataGrid" PreviewMouseDown="MyDataGrid_PreviewMouseDown" SelectionMode="Extended" SelectionUnit="Cell"></DataGrid> 

然後在後面的代碼，你可以做這樣的事情：

private void MyDataGrid_PreviewMouseDown(object sender, MouseButtonEventArgs e) 
{ 
    if (e.ChangedButton == MouseButton.Middle && e.ButtonState == MouseButtonState.Pressed) 
    { 
     MyDataGrid.Focus(); 

     DependencyObject dep = (DependencyObject)e.OriginalSource; 

     // Traverse the visual tree looking for DataGridCell 
     while ((dep != null) && !(dep is DataGridCell)) 
      dep = VisualTreeHelper.GetParent(dep); 

     if (dep == null) 
     { 
      // Didn't find DataGridCell 
      return; 
     } 

     DataGridCell cell = dep as DataGridCell; 

     if (cell != null)     
     { 
      DataGridCellInfo cellInfo = new DataGridCellInfo(cell); 
      if(!MyDataGrid.SelectedCells.Contains(cellInfo)) 
      { 
       // The cell is not already selected, add it to the selection 
       MyDataGrid.SelectedCells.Add(new DataGridCellInfo(cell)); 
      } 
      else 
      { 
       // Cell is already part of selection, remove it (same behaviour as ctrl+left click) 
       MyDataGrid.SelectedCells.Remove(cellInfo); 
      } 

     } 
    } 
}