我有一个datagridview,哪些单元格有一个click事件.单元格还具有以下mouseDown事件:
if (e.Button == MouseButtons.Left && e.Clicks == 1) { string[] filesToDrag = { "c:/install.log" }; gridOperations.DoDragDrop(new DataObject(DataFormats.FileDrop,filesToDrag),DragDropEffects.Copy); }
每当我尝试单击一个单元格时,mousedown事件会立即触发并尝试拖动单元格.如果用户将鼠标按下1秒钟,我怎样才能使mousedown事件触发?谢谢!
解决方法
这样做的正确方法不是时间,而是在用户移动鼠标时触发它. Windows中“足够移动”的通用度量是双击大小.实现CellMouseDown / Move事件处理程序,类似于:
private Point mouseDownPos; private void dataGridView1_CellMouseDown(object sender,DataGridViewCellMouseEventArgs e) { mouseDownPos = e.Location; } private void dataGridView1_CellMouseMove(object sender,DataGridViewCellMouseEventArgs e) { if ((e.Button & MouseButtons.Left) == MouseButtons.Left) { if (Math.Abs(e.X - mouseDownPos.X) >= SystemInformation.DoubleClickSize.Width || Math.Abs(e.Y - mouseDownPos.Y) >= SystemInformation.DoubleClickSize.Height) { // Start dragging //... } } }