覆盖 DataGridView Shift+Space

Question

在 DataGridView 中，按 SHIFT 和 SPACE 将默认选择整行。我找到的唯一解决方案（参考vb.net DataGridView - Replace Shortcut Key with typed character）是关闭行选择功能。虽然这样可行，但并不理想，因为我仍然希望能够使用行选择器选择整行（例如，删除行），并将SelectionMode 属性更改为RowHeaderSelect 以外的任何属性我失去了这种能力。有没有办法只捕获 SHIFT+SPACE 组合并用简单的 SPACE 替换它？当控件的MutiSelect 属性设置为True 并且SelectionMode 属性设置为RowHeaderSelect 时，似乎没有一个键事件甚至可以识别击键，所以我不能使用这些。

ETA：我想也许可以关闭MultiSelect 并将选择模式更改为CellSelect，然后为RowHeaderMouseClick 事件添加一个事件处理程序会起作用......不。

Answer 1

我想出如何做到这一点的最佳方法是从 DataGridView 继承并覆盖 ProcessCmdKey 方法。然后你可以拦截 Shift+Space 并在 Space 上发送。只需将此类添加到您的项目中，然后将所有 DataGridViews 切换到 MyDataGridViews。我的解决方案从DataGridView keydown event not working in C# SO 问题（这也解释了为什么 Zaggler 的解决方案不起作用）和SendKeys in ProcessCmdKey: change Shift-Space to just a Space Bytes.com 帖子中汲取灵感。抱歉，它是用 C# 编写的。

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);
    }
}

Answer 2

这是我的解决方案：

private void dataGridView_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
{
    dataGridView.SelectionMode = DataGridViewSelectionMode.CellSelect;
}

private void dataGridView_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    dataGridView.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
}

Answer 3

这对我来说很好用....

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

这是另一种方式..

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

只是对它们进行试验，希望对你有用？