拖放: DataGridView行“TabPage”

Question

解决了，我想把一些DataGridViewRows从DataGridView (包含在TabPage中)拖到另一个DataGridView (也包含在另一个TabPage中)。我已经设置了DataGridView的事件(How could I Drag and Drop DataGridView Rows under each other?)，但是我不知道如何在TabPages之间“导航”！

Answer 1

下面是一个简单的示例，可以将文本从标签上的一个文本框拖到另一个单独的选项卡上：

private void textBox1_MouseDown(object sender, MouseEventArgs e)
{
    textBox1.DoDragDrop(textBox1.Text, DragDropEffects.Copy | DragDropEffects.Move);
}

private void tabControl1_DragOver(object sender, DragEventArgs e)
{
    Point location = tabControl1.PointToClient(Control.MousePosition);
    for (int tab = 0; tab < tabControl1.TabCount; ++tab)
    {
        if (tabControl1.GetTabRect(tab).Contains(location))
        {
            tabControl1.SelectedIndex = tab;
            break;
        }
    }
}

private void textBox2_DragEnter(object sender, DragEventArgs e)
{
    if (e.Data.GetDataPresent(DataFormats.Text))
        e.Effect = DragDropEffects.Copy;
    else
        e.Effect = DragDropEffects.None;
}

private void textBox2_DragDrop(object sender, DragEventArgs e)
{
    textBox2.Text = e.Data.GetData(DataFormats.Text).ToString();
}

注意:您必须在AllowDrop上将TabControl属性设置为true，当然在目标控件上也是如此。

干杯

Answer 2

我自己解决了这个问题( @mrlucmorin)：

internal void dgv_MouseDown(object sender, MouseEventArgs e)
{
     DataGridView dgv = (DataGridView)sender;
     List<DataGridViewRow> result = new List<DataGridViewRow>();
     foreach(DataGridViewRow row in dgv.SelectedRows)
     {
         result.Add(row);
     }
     dgv.DoDragDrop(result, DragDropEffects.Copy | DragDropEffects.Move);
}

private void dgv_DragEnter(object sender, DragEventArgs e)
{
     e.Effect = DragDropEffects.Copy;
}

private void dgv_DragDrop(object sender, DragEventArgs e)
{
     try
     {
          DataGridView dataGridView1 = (DataGridView)sender;
          List<DataGridViewRow> rows = new List<DataGridViewRow>();
          rows = (List<DataGridViewRow>)e.Data.GetData(rows.GetType());

          //some stuff
     }
 }