Question

我添加了拖动＆amp;放到DataGridView，CellDoubleClick事件停止工作。在CellMouseDown事件中，我有以下代码：

private void dataGridView2_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
    var obj = dataGridView2.CurrentRow.DataBoundItem;
    DoDragDrop(obj, DragDropEffects.Link);
}

如何更正此功能以启用CellDoubleClick事件？

Answer 1

是的，那不行。调用DoDragDrop（）会将鼠标控制转换为Windows D + D逻辑，这会干扰正常的鼠标处理。您需要延迟启动D + D，直到您看到用户实际拖动为止。这应该解决问题：

    Point dragStart;

    private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e) {
        if (e.Button == MouseButtons.Left) dragStart = e.Location;
    }

    private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e) {
        if (e.Button == MouseButtons.Left) {
            var min = SystemInformation.DoubleClickSize;
            if (Math.Abs(e.X - dragStart.X) >= min.Width ||
                Math.Abs(e.Y - dragStart.Y) >= min.Height) {
                // Call DoDragDrop
                //...
            }
        }
    }

添加Drag And; Drop后，CellDoubleClick事件不起作用

1 个答案: