重寫DataGridView Shift + Space

Question

在DataGridView中，按SHIFT和SPACE將默認選擇整行。我發現的唯一解決方案（參考vb.net DataGridView - Replace Shortcut Key with typed character）是關閉行選擇功能。雖然這是有效的，但這並不理想，因爲我仍然希望能夠使用行選擇器來選擇整行（例如，刪除行），並且通過將SelectionMode屬性更改爲RowHeaderSelect以外的任何其他屬性，我失去了該能力。有沒有一種方法可以捕捉SHIFT + SPACE組合並用簡單的SPACE替換它？似乎沒有任何關鍵事件甚至認識到，當控件的MutiSelect屬性設置爲True並且SelectionMode屬性設置爲RowHeaderSelect時，按鍵操作無法使用，因此我無法使用這些按鍵。 ETA：我想也許關閉MultiSelect並將選擇模式更改爲CellSelect，然後爲​​事件添加事件處理程序將工作...不行。

Answer 1

這裏這個工作正常，我....

Private Sub DataGridView1_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles DataGridView1.KeyDown 
    'Lets see what keys we have down shall we?' 
    If My.Computer.Keyboard.ShiftKeyDown And e.KeyCode = Keys.Space Then 
     DataGridView1.CurrentCell.Selected = False 
    End If 
End Sub 

這裏的另一種方式..

Private Sub DataGridView1_KeyDown(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles DataGridView1.KeyDown 
    'Lets see what keys we have down shall we?' 
    If My.Computer.Keyboard.ShiftKeyDown And e.KeyCode = Keys.Space Then 
     'SendKeys.Send(Keys.Space) 
     DataGridView1.CurrentCell.Selected = False 
    End If 
End Sub 

只是實驗與他們希望的東西的作品適合您嗎？

Answer 2

我想出瞭如何完成此操作的最佳方式是從DataGridView繼承並重寫ProcessCmdKey方法。然後你可以截取Shift + Space併發送給Space。只需將此類添加到您的項目中，並將所有DataGridView切換到MyDataGridView。我的解決方案從這個DataGridView keydown event not working in C# SO問題中得到靈感（這也解釋了爲什麼Zaggler的解決方案不起作用）和Bytes.com的這篇文章。對不起，但它是用C＃編寫的。

class MyDataGridView : System.Windows.Forms.DataGridView 
{ 
    protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData) 
    { 
     if (keyData == (System.Windows.Forms.Keys.Space | System.Windows.Forms.Keys.Shift)) 
     { 
      // DataGridView is dumb and will select a row when the user types Shift+Space 
      // if you have the DGV set so that you can click a row header to select a row (for example, to delete the row) 
      // this method will intercept Shift+Space and just send on Space so that the DGV properly handles this. 
      // For example, if I type "ME TYPING IN ALL CAPS" it ends up looking like "METYPINGINALLCAPS". 
      // Or if I type "Note: I have some OS thing to talk about" it looks like "Note:Ihave some OSthing to talk about" 

      byte[] keyStates = new byte[255]; 
      UnsafeNativeMethods.GetKeyboardState(keyStates); 
      byte shiftKeyState = keyStates[16]; 
      keyStates[16] = 0; // turn off the shift key 
      UnsafeNativeMethods.SetKeyboardState(keyStates); 

      System.Windows.Forms.SendKeys.SendWait(" "); 

      keyStates[16] = shiftKeyState; // turn the shift key back on 
      UnsafeNativeMethods.SetKeyboardState(keyStates); 
      return true; 
     } 
     return base.ProcessCmdKey(ref msg, keyData); 
    } 

    [System.Security.SuppressUnmanagedCodeSecurity] 
    internal static class UnsafeNativeMethods 
    { 

     [System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)] 
     public static extern int GetKeyboardState(byte[] keystate); 


     [System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)] 
     public static extern int SetKeyboardState(byte[] keystate); 
    } 
}