Question

我尝试创建自定义图片框，我想仅在数据加载到 datagridview 时显示，但不成功。

我做错了什么。这是我的代码的一个例子。

      'creating picturebox

    pic.CreateControl()
    pic.Visible = True
    pic.Width = 222
    pic.Height = 173
    Dim x As Integer = 602
    Dim y As Integer = 207
    pic.ImageLocation = ("C:\index.jpg")
    pic.Load()
    pic.Name = "Obavjestenje"
    pic.Size = New System.Drawing.Size(264, 200)
    pic.TabIndex = 900
    pic.TabStop = False
    pic.Show()


      'filing data into dataset

    dsFilter = New DataSet
    myCommandLoad = New SqlCommand(workerSQL, conn)
    myCommandLoad.CommandTimeout = 200
    adapterLoad.SelectCommand = myCommandLoad
    adapterLoad.Fill(dsFilter)
    adapterLoad.Dispose()
    myCommandLoad.Dispose()
     ' binding dataset and datagrid
    If dsFilter.Tables(0).Rows.Count > 0 Then

        pic.Dispose()

        GridControl1.DataSource = dsFilter.Tables(0)

     ' at this point I don't whant to see picturebox while my data is uploaded

    Pic.Visible = False
End Sub

Answer 1

尝试

Dim pic As New PictureBox

pic.Width = 222
pic.Height = 173
pic.Location = New Point(?, ?)

pic.ImageLocation = "C:\index.jpg"
pic.Load()

pic.Visible = True

Me.Controls.Add(pic)

pic.Refresh()

'filing data into dataset
...

或更好

Using pic = New PictureBox
    pic.Width = 222
    pic.Height = 173
    pic.Location = New Point(?, ?)

    pic.ImageLocation = "C:\index.jpg"
    pic.Load()

    pic.Visible = True

    Me.Controls.Add(pic)

    pic.Refresh()

    'filing data into dataset
    ...    
    ...
End Using

最后你不需要pic.Visible = False or dispose。

瓦尔特

将数据加载到gridView - vb.net时显示图像

1 个答案: