{"id":385,"date":"2025-10-25T10:39:46","date_gmt":"2025-10-25T08:39:46","guid":{"rendered":"https:\/\/www.silverice.it\/IpercubeTechWP1\/?page_id=385"},"modified":"2025-10-25T11:25:54","modified_gmt":"2025-10-25T09:25:54","slug":"xlconvertlistobject2table","status":"publish","type":"page","link":"https:\/\/www.silverice.it\/IpercubeTechWP1\/ipercube-utilities\/excel-functions\/xlconvertlistobject2table\/","title":{"rendered":"Data Import\/Export &#8211; Convert ListObject to DataTable"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Converts an\u00a0<strong>Excel.ListObject<\/strong>\u00a0(Excel table) into a\u00a0<em>DataTable<\/em>.<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:75%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column page-snippet is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-Geist-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-Geist-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">VB<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>    Public Function xlConvertListObject2Table(ListObject As ListObject) As System.Data.DataTable\n\n        If ListObject Is Nothing Then Return Nothing\n\n        Dim dt As New Data.DataTable\n        Dim rHeaders As Excel.Range\n        Dim rBody As Excel.Range\n\n        'Set Columns\n        rHeaders = ListObject.HeaderRowRange\n        For Each cCell As Range In rHeaders\n            dt.Columns.Add(cCell.Value)\n        Next\n\n        'Set Rows\n        rBody = ListObject.DataBodyRange\n        Dim dataRow As Data.DataRow = dt.NewRow()\n        Dim iColIndex As Integer\n        Try\n\n            For Each row As Excel.ListRow In ListObject.ListRows\n                iColIndex = 0\n\n                For Each cCell As Range In row.Range\n                    If cCell.Value IsNot Nothing Then\n                        dataRow(iColIndex) = IIf(String.IsNullOrEmpty(cCell.Value), \".\", cCell.Value.ToString) : iColIndex += 1\n                    Else\n                        dataRow(iColIndex) = String.Empty\n                    End If\n                Next\n\n                dt.Rows.Add(dataRow)\n                dataRow = dt.NewRow()\n            Next\n\n            Return dt\n\n        Catch ex As Exception\n            Dim szFunctionName As String = New Diagnostics.StackTrace().GetFrame(0).GetMethod().Name\n            'ShowMessageBox(szModuleName + \".\" + szFunctionName + vbLf + vbLf + ex.ToString, \"Error\", MessageBoxButtons.OK, MessageBoxIcon.Error)\n        End Try\n\n        Return Nothing\n    End Function<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">Public Function <\/span><span style=\"color: #DCDCAA\">xlConvertListObject2Table<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">ListObject<\/span><span style=\"color: #D4D4D4\"> As <\/span><span style=\"color: #4EC9B0\">ListObject<\/span><span style=\"color: #D4D4D4\">) As <\/span><span style=\"color: #4EC9B0\">System<\/span><span style=\"color: #D4D4D4\">.Data.DataTable<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">If<\/span><span style=\"color: #D4D4D4\"> ListObject Is<\/span><span style=\"color: #569CD6\"> Nothing<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Then<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Return<\/span><span style=\"color: #569CD6\"> Nothing<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> dt <\/span><span style=\"color: #D4D4D4\">As<\/span><span style=\"color: #569CD6\"> New <\/span><span style=\"color: #D4D4D4\">Data.DataTable<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> rHeaders <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">Excel<\/span><span style=\"color: #D4D4D4\">.Range<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> rBody <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">Excel<\/span><span style=\"color: #D4D4D4\">.Range<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">&#39;Set Columns<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">rHeaders<\/span><span style=\"color: #D4D4D4\"> = ListObject.HeaderRowRange<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">For<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Each<\/span><span style=\"color: #D4D4D4\"> cCell As <\/span><span style=\"color: #4EC9B0\">Range<\/span><span style=\"color: #D4D4D4\"> In rHeaders<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            dt.Columns.<\/span><span style=\"color: #DCDCAA\">Add<\/span><span style=\"color: #D4D4D4\">(cCell.<\/span><span style=\"color: #9CDCFE\">Value<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">Next<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">&#39;Set Rows<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #9CDCFE\">rBody<\/span><span style=\"color: #D4D4D4\"> = ListObject.DataBodyRange<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> dataRow <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">Data<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #9CDCFE\">DataRow<\/span><span style=\"color: #D4D4D4\"> = dt.<\/span><span style=\"color: #DCDCAA\">NewRow<\/span><span style=\"color: #D4D4D4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> iColIndex <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">Integer<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        Try<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">For<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Each<\/span><span style=\"color: #D4D4D4\"> row As <\/span><span style=\"color: #4EC9B0\">Excel<\/span><span style=\"color: #D4D4D4\">.ListRow In ListObject.ListRows<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #9CDCFE\">iColIndex<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #B5CEA8\">0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #C586C0\">For<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Each<\/span><span style=\"color: #D4D4D4\"> cCell As <\/span><span style=\"color: #4EC9B0\">Range<\/span><span style=\"color: #D4D4D4\"> In row.Range<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                    <\/span><span style=\"color: #C586C0\">If<\/span><span style=\"color: #D4D4D4\"> cCell.Value IsNot<\/span><span style=\"color: #569CD6\"> Nothing<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Then<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                        <\/span><span style=\"color: #DCDCAA\">dataRow<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">iColIndex<\/span><span style=\"color: #D4D4D4\">) = <\/span><span style=\"color: #C586C0\">IIf<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #DCDCAA\">String<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">IsNullOrEmpty<\/span><span style=\"color: #D4D4D4\">(cCell.<\/span><span style=\"color: #9CDCFE\">Value<\/span><span style=\"color: #D4D4D4\">), <\/span><span style=\"color: #CE9178\">&quot;.&quot;<\/span><span style=\"color: #D4D4D4\">, cCell.Value.<\/span><span style=\"color: #9CDCFE\">ToString<\/span><span style=\"color: #D4D4D4\">) : <\/span><span style=\"color: #9CDCFE\">iColIndex<\/span><span style=\"color: #D4D4D4\"> += <\/span><span style=\"color: #B5CEA8\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                    <\/span><span style=\"color: #C586C0\">Else<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                        <\/span><span style=\"color: #DCDCAA\">dataRow<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">iColIndex<\/span><span style=\"color: #D4D4D4\">) = <\/span><span style=\"color: #DCDCAA\">String<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #569CD6\">Empty<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                    <\/span><span style=\"color: #C586C0\">End If<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #C586C0\">Next<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                dt.Rows.<\/span><span style=\"color: #DCDCAA\">Add<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">dataRow<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #9CDCFE\">dataRow<\/span><span style=\"color: #D4D4D4\"> = dt.<\/span><span style=\"color: #DCDCAA\">NewRow<\/span><span style=\"color: #D4D4D4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">Next<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">Return<\/span><span style=\"color: #D4D4D4\"> dt<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        Catch ex As <\/span><span style=\"color: #4EC9B0\">Exception<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> szFunctionName <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">String<\/span><span style=\"color: #D4D4D4\"> =<\/span><span style=\"color: #569CD6\"> New <\/span><span style=\"color: #D4D4D4\">Diagnostics.<\/span><span style=\"color: #DCDCAA\">StackTrace<\/span><span style=\"color: #D4D4D4\">().<\/span><span style=\"color: #DCDCAA\">GetFrame<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">).<\/span><span style=\"color: #DCDCAA\">GetMethod<\/span><span style=\"color: #D4D4D4\">().Name<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #6A9955\">&#39;ShowMessageBox(szModuleName + &quot;.&quot; + szFunctionName + vbLf + vbLf + ex.ToString, &quot;Error&quot;, MessageBoxButtons.OK, MessageBoxIcon.Error)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">End<\/span><span style=\"color: #D4D4D4\"> Try<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">Return<\/span><span style=\"color: #569CD6\"> Nothing<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">End Function<\/span><\/span><\/code><\/pre><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Converts an\u00a0Excel.ListObject\u00a0(Excel table) into a\u00a0DataTable.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":349,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-385","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/comments?post=385"}],"version-history":[{"count":4,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/385\/revisions"}],"predecessor-version":[{"id":431,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/385\/revisions\/431"}],"up":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/349"}],"wp:attachment":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/media?parent=385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}