Aveva Marine VBNET 编程系列====>读取drawing explorer的第2层级 Sub views

接上期的内容,此次读取view的下一层几subview

主要用到下面的方法获取view的第一个子级

一个封装的类

Public Class DrawingExpolrerEx
    Public Shared Function DrawingHasViews(draftApp As MarDrafting) As Boolean
        Dim vh As MarElementHandle
        Try
            vh = draftApp.ElementChildFirstGet()
            Return True
        Catch ex As Exception
            Return False
        End Try
    End Function

    ''' <summary>
    '''  获取当前视图的全部的子视图的句柄
    ''' </summary>
    ''' <param name="draftApp">MarDrafting对象</param>
    ''' <param name="viewHandle">视图的句柄</param>
    ''' <returns>子视图句柄的list集合</returns>
    Public Shared Function ViewSubViews(draftApp As MarDrafting, viewHandle As MarElementHandle) As List(Of MarElementHandle)
        If Not draftApp.ElementIsView(viewHandle) Then
            Return Nothing
        End If
        Dim rtns As New List(Of MarElementHandle)
        Try
            Dim subvh As MarElementHandle
            subvh = draftApp.ElementChildFirstGet(viewHandle)
            rtns.Add(subvh)
            '读取第2个view
            Dim nextsubVh As MarElementHandle
            Try
                nextsubVh = draftApp.ElementSiblingNextGet(subvh)
                rtns.Add(nextsubVh)
            Catch ex As Exception
            End Try
            Dim errFlag As Boolean = True
            Do
                Try
                    nextsubVh = draftApp.ElementSiblingNextGet(nextsubVh)
                    rtns.Add(nextsubVh)
                Catch ex As Exception
                    errFlag = False
                End Try
            Loop While errFlag
        Catch ex As Exception
            MsgBox(ex.StackTrace)
        End Try
        Return rtns
    End Function

    ''' <summary>
    ''' 获取当前子视图的全部的组件的句柄
    ''' </summary>
    ''' <param name="draftApp">MarDrafting对象</param>
    ''' <param name="subviewHandle">子视图的句柄</param>
    ''' <returns>组件句柄的list集合</returns>
    Public Shared Function SubViewComponents(draftApp As MarDrafting, subviewHandle As MarElementHandle) As List(Of MarElementHandle)
        If Not draftApp.ElementIsSubview(subviewHandle) Then
            Return Nothing
        End If
        Dim rtns As New List(Of MarElementHandle)
        Try
            Dim compovh As MarElementHandle
            compovh = draftApp.ElementChildFirstGet(subviewHandle)
            rtns.Add(compovh)
            '读取第2个view
            Dim nextcompobVh As MarElementHandle
            Try
                nextcompobVh = draftApp.ElementSiblingNextGet(compovh)
                rtns.Add(nextcompobVh)
            Catch ex As Exception
            End Try
            Dim errFlag As Boolean = True
            Do
                Try
                    nextcompobVh = draftApp.ElementSiblingNextGet(nextcompobVh)
                    rtns.Add(nextcompobVh)
                Catch ex As Exception
                    errFlag = False
                End Try
            Loop While errFlag
        Catch ex As Exception
            MsgBox(ex.StackTrace)
        End Try
        Return rtns
    End Function

    ''' <summary>
    ''' 获取当前图纸的全部的视图的句柄
    ''' </summary>
    ''' <param name="draftApp">MarDrafting对象</param>
    ''' <returns>视图句柄的list集合</returns>
    Public Shared Function DrawingViews(draftApp As MarDrafting) As List(Of MarElementHandle)
        Dim rtns As New List(Of MarElementHandle)
        Try
            If Not DrawingHasViews(draftApp) Then MsgBox("当前未开启任何图纸,结束命令!", MsgBoxStyle.Critical) : Return Nothing
            '读取第一个view
            Dim vh As MarElementHandle
            vh = draftApp.ElementChildFirstGet()
            rtns.Add(vh)
            '读取第2个view
            Dim nextVh As MarElementHandle
            Try
                nextVh = draftApp.ElementSiblingNextGet(vh)
                rtns.Add(nextVh)
            Catch ex As Exception
            End Try
            Dim errFlag As Boolean = True
            Do
                Try
                    nextVh = draftApp.ElementSiblingNextGet(nextVh)
                    rtns.Add(nextVh)
                Catch ex As Exception
                    errFlag = False
                End Try
            Loop While errFlag
        Catch ex As Exception
            MsgBox(ex.StackTrace)
        End Try
        Return rtns
    End Function


End Class

主函数，也就文章刚开始看到的结果

  <MyAmFunctionAtt(NameOf(读取DrawingExplorer), NameOf(读取子视图名称))>
    Public Sub 读取子视图名称(wm As WindowManager)
        Try
            Dim amEnv As New AmEnvironment()
            If Not amEnv.DraftApp.DwgCurrent() Then MsgBox("当前未开启任何图纸,结束命令!", MsgBoxStyle.Critical) : Exit Sub
            Dim views = DrawingExpolrerEx.DrawingViews(amEnv.DraftApp)
            If views Is Nothing Then MsgBox("图纸中无任何内容!", MsgBoxStyle.Critical) : Exit Sub
            Dim i As Integer = 1
            For Each item As MarElementHandle In views
                amEnv.MarUI.MessageNoConfirm($"<------第 {i} 个view的名称是:{amEnv.DraftApp.SubpictureNameGet(item)},开始读取其子视图------> ")
                Dim subViews = DrawingExpolrerEx.ViewSubViews(amEnv.DraftApp, item)
                If subViews IsNot Nothing Then
                    Dim j As Integer = 1
                    For Each sv As MarElementHandle In subViews
                        amEnv.MarUI.MessageNoConfirm($"第 {j} 个subview的名称是:{amEnv.DraftApp.SubpictureNameGet(sv)} ")
                        j += 1
                    Next
                    amEnv.MarUI.MessageNoConfirm($"<-------第 {i} 个view的读取其子视图完成------>")
                End If
                i += 1
            Next
        Catch ex As Exception
            MsgBox(ex.StackTrace)
        End Try

    End Sub