回答編集履歴
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改良版に変更(以前の回答は質問文に移動済み)
answer
CHANGED
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関数にControlを渡してコンテンツを追加する方法から、
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コンテンツを追加したControlを返す方法に変えました。
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これにより、葉の部分はテーブルにまとめられるようになりましたので、若干軽量化できたと思います。
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```vbnet
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Private Function CreateAccordion(ByVal header As DataRow, ByVal content As DataRow()) As Control
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CreateAccordion = Nothing
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Dim accordionPane As AjaxControlToolkit.AccordionPane
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Dim contentDT As DataTable = Nothing
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Dim accordion As AjaxControlToolkit.Accordion
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Dim accordionPane As AjaxControlToolkit.AccordionPane
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Dim table As Table = Nothing
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Dim headerRow As TableRow
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Dim children As DataRow() = Nothing
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Dim pattern As String
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Try
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' Accordion Header
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headerRow = CreateRow(header) ' TableRowを生成する関数(省略)
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If ((Not content Is Nothing) AndAlso (content.Length > 0)) Then
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' Get Children
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contentDT = content.CopyToDataTable
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pattern = "xxxx" ' patternは抽出条件(省略)
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children = contentDT.Select(pattern)
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End If
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If ((Not children Is Nothing) AndAlso (children.Length > 0)) Then
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' Have children
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accordion = New AjaxControlToolkit.Accordion
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accordion.ID = "accordion_" + header("xxx")
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accordion.ContentCssClass = "accordionContent"
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accordion.HeaderCssClass = "accordionHeader"
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accordion.RequireOpenedPane = False
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accordionPane = New AjaxControlToolkit.AccordionPane
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accordionPane.ID = "accordionPane_" + header("xxx")
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' Add Header
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table = New Table
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table.ID = "table_" + header("xxx")
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table.Controls.Add(
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table.Controls.Add(headerRow)
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accordionPane.HeaderContainer.Controls.Add(table)
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table = Nothing
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For Each row As DataRow In children
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' コンテンツなし
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control.Add(table)
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Else
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'
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pattern = "xxxx" ' patternは抽出条件(省略)
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Dim control As Control = CreateAccordion(row, contentDT.Select(pattern))
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If (TypeOf control Is TableRow) Then
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accordion.ID = "accordion_" + header("xxx")
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accordion.ContentCssClass = "accordionContent"
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accordion.HeaderCssClass = "accordionHeader"
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' Child-Node is TableRow
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accordionPane = New AjaxControlToolkit.AccordionPane
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accordionPane.ID = "accordionPane_" + header("xxx")
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If (table Is Nothing) Then
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' Table is not created yet
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' コンテンツの追加は、再帰呼出しによって行う
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table = New Table
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End If
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' Add Child-Node
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table.Controls.Add(control)
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Else
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' Child-Node is Accordion
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' 作成したアコーディオンを追加する
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If (Not table Is Nothing) Then
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' table is created -> add first
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accordionPane.ContentContainer.Controls.Add(table)
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table = Nothing
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End If
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' Add Child-Node
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accordionPane.ContentContainer.Controls.Add(control)
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End If
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Next
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If (Not table Is Nothing) Then
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' table still remain
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accordionPane.ContentContainer.Controls.Add(table)
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End If
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accordion.Panes.Add(accordionPane)
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CreateAccordion = accordion
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Throw
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End Try
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Else
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' Have no children
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CreateAccordion = headerRow
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End If
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Catch ex As Exception
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Throw
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End Try
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End Function
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```
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```
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これで締めさせていただきます。
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ありがとうございました。
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