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我有一个datagridview. 在此gridview，当我左键单击并按住该行并将其拖放到另一行时，它工作正常，但行的选择保持不变。

例如。如果我选择 row# 2 并将其拖动到 row# 4 ，则 row# 2 下降到位置 4 但行选择保持不变。我希望当我将它放到第 4 行时，所选行应该是第 4 行。

我已经为拖放功能做了一些代码。

private void dataGridView1_MouseMove(object sender, MouseEventArgs e)
{
    if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
    {
        // If the mouse moves outside the rectangle, start the drag.
        if (dragBoxFromMouseDown != Rectangle.Empty &&
            !dragBoxFromMouseDown.Contains(e.X, e.Y))
        {

            // Proceed with the drag and drop, passing in the list item.                    
            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
        // Reset the rectangle if the mouse is not over an item in the ListBox.
        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));

    // Get the row index of the item the mouse is below. 
    rowIndexOfItemUnderMouseToDrop =
        dataGridView1.HitTest(clientPoint.X, clientPoint.Y).RowIndex;

    // If the drag operation was a move then remove and insert the row.
    if (e.Effect== DragDropEffects.Move)
    {
        DataGridViewRow rowToMove = e.Data.GetData(
            typeof(DataGridViewRow)) as DataGridViewRow;
        dataGridView1.Rows.RemoveAt(rowIndexFromMouseDown);
        dataGridView1.Rows.Insert(rowIndexOfItemUnderMouseToDrop, rowToMove);

    }
}
4

1 回答 1

0

添加行

        dataGridView1.Rows[rowIndexOfItemUnderMouseToDrop].Selected = true;
        dataGridView1.Rows[rowIndexFromMouseDown].Selected = false;

最后，dataGridView1_DragDrop这样选择就会改变。您已经有问题地更改了行，这意味着dataGridView对它的选择没有改变。

于 2013-08-13T14:20:32.737 回答