在我添加了拖动 &拖放到 DataGridView,CellDoubleClick 事件停止工作.在 CellMouseDown 事件中,我有以下代码:
After I added drag & drop to a DataGridView, the CellDoubleClick event stopped working. In the CellMouseDown event I have the following code:
private void dataGridView2_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
var obj = dataGridView2.CurrentRow.DataBoundItem;
DoDragDrop(obj, DragDropEffects.Link);
}
如何更正此问题以启用 CellDoubleClick 事件?
How do I correct this to enable CellDoubleClick event?
是的,那行不通.调用 DoDragDrop() 将鼠标控制移交给 Windows D+D 逻辑,这将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.这应该可以解决问题:
Yes, that cannot work. Calling DoDragDrop() turns mouse control over to the Windows D+D logic, that's going to interfere with normal mouse handling. You need to delay starting the D+D until you see the user actually dragging. This ought to solve the problem:
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
//...
}
}
}
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