以编程方式触发 ReportViewer 工具栏控件

Question

有谁知道如何触发 ReportViewer(VS2005) 工具栏中的控件？ 我对创建两个按钮特别感兴趣，我可以单击它们在显示的报告中前进和后退。我知道默认工具栏给了我这个功能，但是前进和后退按钮的大小对于触摸屏来说太小了。这就是我考虑添加两个自定义按钮的原因，它们可以触发工具栏的前进和后退按钮调用的相同事件。 谢谢。

Answer 1

这是 VB.NET 中如何编辑 ReportViewer 组件的工具栏的示例，例如将图像添加到下拉项或您喜欢的任何内容：

Private Sub AddImgRVToolBar()
    Dim ts As ToolStrip = Me.FindToolStrip(Of ToolStrip)(Me.ReportViewer1)

            If ts IsNot Nothing Then
                Dim exportButton As ToolStripDropDownButton = TryCast(ts.Items("export"), ToolStripDropDownButton)

                If exportButton IsNot Nothing Then
                    AddHandler exportButton.DropDownOpened, AddressOf OnExportOpened
                End If
            End If
End Sub

    Private Sub OnExportOpened(sender As Object, e As EventArgs)
            If TypeOf sender Is ToolStripDropDownButton Then
                Dim button As ToolStripDropDownButton = DirectCast(sender, ToolStripDropDownButton)

                For Each item As ToolStripItem In button.DropDownItems
                    Dim extension As RenderingExtension = DirectCast(item.Tag, RenderingExtension)

                    If extension IsNot Nothing Then
                        Select Case extension.Name
                            Case "Excel"
                                item.Image = My.Resources.page_white_excel_16x16
                            Case "PDF"
                                item.Image = My.Resources.page_white_acrobat_16x16
                            Case "WORD"
                                item.Image = My.Resources.page_white_word_16x16
                                item.Text = "Word"
                        End Select
                    End If
                Next
            End If
        End Sub

        Private Function FindToolStrip(Of T As System.Windows.Forms.Control)(ByVal control As Control) As T
            If control Is Nothing Then
                Return Nothing
            ElseIf TypeOf control Is T Then
                Return DirectCast(control, T)
            Else
                Dim result As T = Nothing

                For Each embedded As Control In control.Controls
                    If result Is Nothing Then
                        result = FindToolStrip(Of T)(embedded)
                    End If
                Next

                Return result
            End If
        End Function