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在 Windows 应用程序 (Visual Studio)(VB) 中,如何将单行拖放到另一个位置以允许用户重新排序该行?我还没有找到任何有值(value)的例子。
最佳答案
这是这个 C# 答案的 vb 版本:How could I Drag and Drop DataGridView Rows under each other?
表单类变量:
Private fromIndex As Integer
Private dragIndex As Integer
Private dragRect As Rectangle
Private Sub DataGridView1_DragDrop(ByVal sender As Object, _
ByVal e As DragEventArgs) _
Handles DataGridView1.DragDrop
Dim p As Point = DataGridView1.PointToClient(New Point(e.X, e.Y))
dragIndex = DataGridView1.HitTest(p.X, p.Y).RowIndex
If (e.Effect = DragDropEffects.Move) Then
Dim dragRow As DataGridViewRow = e.Data.GetData(GetType(DataGridViewRow))
DataGridView1.Rows.RemoveAt(fromIndex)
DataGridView1.Rows.Insert(dragIndex, dragRow)
End If
End Sub
Private Sub DataGridView1_DragOver(ByVal sender As Object, _
ByVal e As DragEventArgs) _
Handles DataGridView1.DragOver
e.Effect = DragDropEffects.Move
End Sub
Private Sub DataGridView1_MouseDown(ByVal sender As Object, _
ByVal e As MouseEventArgs) _
Handles DataGridView1.MouseDown
fromIndex = DataGridView1.HitTest(e.X, e.Y).RowIndex
If fromIndex > -1 Then
Dim dragSize As Size = SystemInformation.DragSize
dragRect = New Rectangle(New Point(e.X - (dragSize.Width / 2), _
e.Y - (dragSize.Height / 2)), _
dragSize)
Else
dragRect = Rectangle.Empty
End If
End Sub
Private Sub DataGridView1_MouseMove(ByVal sender As Object, _
ByVal e As MouseEventArgs) _
Handles DataGridView1.MouseMove
If (e.Button And MouseButtons.Left) = MouseButtons.Left Then
If (dragRect <> Rectangle.Empty _
AndAlso Not dragRect.Contains(e.X, e.Y)) Then
DataGridView1.DoDragDrop(DataGridView1.Rows(fromIndex), _
DragDropEffects.Move)
End If
End If
End Sub
AllowDrop
属性设置为真。
关于vb.net - 如何在同一数据 GridView 中拖放行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11566751/
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