AccessTr.neT

Bul · 23/01/2020, 08:35

Visualbasic de yazılmış bu örneği accessde yapabilir miyiz
Drag and drop strings from one ListBox to another in Visual Basic .NET

' Start a drag.
Private Sub lst_MouseDown(ByVal sender As Object, ByVal e _
As System.Windows.Forms.MouseEventArgs) Handles _
lstFruits.MouseDown, lstAnimals.MouseDown
Dim lst As ListBox = DirectCast(sender, ListBox)

If e.Button = Windows.Forms.MouseButtons.Right Then
Dim index As Integer = lst.IndexFromPoint(e.X, e.Y)
If index <> ListBox.NoMatches Then
Dim item As String = lst.Items(index)
Dim drop_effect As DragDropEffects = _
lst.DoDragDrop( _
lst.Items(index), _
DragDropEffects.Move Or _
DragDropEffects.Copy)

' If it was moved, remove the item from this
' list.
If drop_effect = DragDropEffects.Move Then
' See if the user dropped the item in this
' ListBox
' at a higher position.
If lst.Items(index) = item Then
' The item has not moved.
lst.Items.RemoveAt(index)
Else
' The item has moved.
lst.Items.RemoveAt(index + 1)
End If
End If
End If
End If
End Sub

Bul · 23/01/2020, 08:37

If the drag moves over a ListBox, the DragOver event gives the control a chance to allow or prohibit the drag. The following code checks whether the drag can provide a string as data. If so, then it checks whether the Ctrl key is down and allows a move or copy effect.

' Display the appropriate cursor.
Private Sub lstFruits_DragOver(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DragEventArgs) Handles _
lstFruits.DragOver, lstAnimals.DragOver
Const KEY_CTRL As Integer = 8

If Not (e.Data.GetDataPresent(GetType(System.String))) _
Then
e.Effect = DragDropEffects.None
ElseIf (e.KeyState And KEY_CTRL) And _
(e.AllowedEffect And DragDropEffects.Copy) = _
DragDropEffects.Copy Then
' Copy.
e.Effect = DragDropEffects.Copy
ElseIf (e.AllowedEffect And DragDropEffects.Move) = _
DragDropEffects.Move Then
' Move.
e.Effect = DragDropEffects.Move
End If
End Sub

Bul · 23/01/2020, 08:38

' Drop the entry in the list.
Private Sub lstFruits_DragDrop(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DragEventArgs) Handles _
lstFruits.DragDrop, lstAnimals.DragDrop
If e.Data.GetDataPresent(GetType(System.String)) Then
If (e.Effect = DragDropEffects.Copy) Or _
(e.Effect = DragDropEffects.Move) Then
Dim lst As ListBox = DirectCast(sender, ListBox)
Dim item As Object = _
CType(e.Data.GetData(GetType(System.String)), _
System.Object)
Dim pt As Point = lst.PointToClient(New _
Point(e.X, e.Y))
Dim index As Integer = lst.IndexFromPoint(pt.X, _
pt.Y)
If index = ListBox.NoMatches Then
lst.Items.Add(item)
Else
lst.Items.Insert(index, item)
End If
End If
End If
End Sub

Bul · 23/01/2020, 08:41

Her konuyu lütfen kendi bölümüne acınız.

Bul · 23/01/2020, 08:52

ben bunu Access de yapmak istiyorum yani uyarlamak mümkünmü

Bul · 23/01/2020, 09:27

Sitedeki sürükle bırak örneklerini incelediniz mi?

AccessTr.neT

Dizeleri Bir Listbox'tan Diğerine Sürükleyip Bırakın

Dizeleri Bir Listbox'tan Diğerine Sürükleyip Bırakın

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