如何实现通过鼠标移动dataGridView中的行

Posted 2023-03-14

edwin5200回答的
IdDataSortIndex
是什么意思啊？？？？
在线等。。。。。

#region 实现行拖放
private Rectangle dragBoxFromMouseDown;
private int rowIndexFromMouseDown;
private int rowIndexOfItemUnderMouseToDrop;
private void dataGridView1_MouseMove(object sender, MouseEventArgs e)

if ((e.Button & MouseButtons.Left) == MouseButtons.Left)

if (dragBoxFromMouseDown != Rectangle.Empty && !dragBoxFromMouseDown.Contains(e.X, e.Y))

DragDropEffects dropEffect = dataGridView1.DoDragDrop(dataGridView1.Rows[rowIndexFromMouseDown], DragDropEffects.Move);




private void dataGridView1_MouseDown(object sender, MouseEventArgs e)

rowIndexFromMouseDown = dataGridView1.HitTest(e.X, e.Y).RowIndex;

if (rowIndexFromMouseDown != -1)

Size dragSize = SystemInformation.DragSize;
dragBoxFromMouseDown = new Rectangle(new Point(e.X - (dragSize.Width / 2), e.Y - (dragSize.Height / 2)), dragSize);

else

dragBoxFromMouseDown = Rectangle.Empty;



private void dataGridView1_DragOver(object sender, DragEventArgs e)

e.Effect = DragDropEffects.Move;


private void dataGridView1_DragDrop(object sender, DragEventArgs e)

Point clientPoint = dataGridView1.PointToClient(new Point(e.X, e.Y));

rowIndexOfItemUnderMouseToDrop = dataGridView1.HitTest(clientPoint.X, clientPoint.Y).RowIndex;

if (e.Effect == DragDropEffects.Move)


IdDataSortIndex(dataGridView1["ID", rowIndexOfItemUnderMouseToDrop].Value + "", dataGridView1["ID", rowIndexFromMouseDown].Value + "");

DataGridViewRow rowToMove = e.Data.GetData(typeof(DataGridViewRow)) as DataGridViewRow; dataGridView1.Rows.RemoveAt(rowIndexFromMouseDown); dataGridView1.Rows.Insert(rowIndexOfItemUnderMouseToDrop, rowToMove);
dataGridView1.Rows[rowIndexOfItemUnderMouseToDrop].Selected = true;



#endregion 实现行拖放

如果有什么不明白可联系我！ 参考技术A region 实现行拖放
private Rectangle dragBoxFromMouseDown；
private int rowIndexFromMouseDown；
private int rowIndexOfItemUnderMouseToDrop；
private void dataGridView1_MouseMove(object sender， MouseEventArgs e)

if ((e.Button & MouseButtons.Left) == MouseButtons.Left)

if (dragBoxFromMouseDown ，= Rectangle.Empty && ，dragBoxFromMouseDown.Contains(e.X， e.Y))

DragDropEffects dropEffect = dataGridView1.DoDragDrop(dataGridView1.Rows[rowIndexFromMouseDown]， DragDropEffects.Move)；




private void dataGridView1_MouseDown(object sender， MouseEventArgs e)

rowIndexFromMouseDown = dataGridView1.HitTest(e.X， e.Y).RowIndex；

if (rowIndexFromMouseDown ，= -1)

Size dragSize = SystemInformation.DragSize；
dragBoxFromMouseDown = new Rectangle(new Point(e.X - (dragSize.Width / 2)， e.Y - (dragSize.Height / 2))， dragSize)；

else

dragBoxFromMouseDown = Rectangle.Empty；



private void dataGridView1_DragOver(object sender， DragEventArgs e)

e.Effect = DragDropEffects.Move；


private void dataGridView1_DragDrop(object sender， DragEventArgs e)

Point clientPoint = dataGridView1.PointToClient(new Point(e.X， e.Y))；

rowIndexOfItemUnderMouseToDrop = dataGridView1.HitTest(clientPoint.X， clientPoint.Y).RowIndex；

if (e.Effect == DragDropEffects.Move)


IdDataSortIndex(dataGridView1["ID"， rowIndexOfItemUnderMouseToDrop].Value + ""， dataGridView1["ID"， rowIndexFromMouseDown].Value + "")；

DataGridViewRow rowToMove = e.Data.GetData(typeof(DataGridViewRow)) as DataGridViewRow； dataGridView1.Rows.RemoveAt(rowIndexFromMouseDown)； dataGridView1.Rows.Insert(rowIndexOfItemUnderMouseToDrop， rowToMove)；
dataGridView1.Rows[rowIndexOfItemUnderMouseToDrop].Selected = true；



#endregion 实现行拖放

如果有什么不明白可联系我。 参考技术B 在dataGridView中有鼠标移动事件MouseMove