关于C# 将DataGridView数据拖动到picturebox代码示例

            this.PictureBoxNodeBackImage.AllowDrop = true; //这个也要加上 

       //最后我们判断完成后怎样向PictureBox中添加数据，并从datagridview中删除选中数据所在的行，我们在PictureBox的DragDrop事件中执行操作
        private void PictureBoxNodeBackImage_DragDrop(object sender, DragEventArgs e)
        {   
            Point pos = new Point(e.X, e.Y);   //拖動數據后 所記錄的坐標
            pos = this.PictureBoxNodeBackImage.PointToClient(pos);
            int index = -1;
            if (e.Data.GetDataPresent(typeof(int)))
            {
                index = (int)e.Data.GetData(typeof(int));
            }
            if (index > -1)
                MessageBox.Show(DataGridViewleizhi.Rows[index].Cells["Id"].Value.ToString());
        }

  //再次确定当数据拖动到PictureBox上方时，判断数据格式以及目标对象，和拖动方式.我们在PictureBox的DragEnter 事件中进行判断
        private void PictureBoxNodeBackImage_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(typeof(int)))
            {
                e.Effect = DragDropEffects.Copy;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }

   private void DataGridViewleizhi_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
        {
            DataGridViewleizhi.DoDragDrop(e.RowIndex, DragDropEffects.Copy);
        }