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POVB.NET excel deleting multiple columns at the same time
 

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    <p>I am trying to delete more than one column in my excel sheet.</p> <pre><code> For Each lvi In ListView1.Items If lvi.Checked = True Then arrayLetters = lvi.SubItems(1).Text &amp; ":" &amp; lvi.SubItems(1).Text &amp; "," &amp; arrayLetters End If Next arrayLetters = arrayLetters.Substring(0, arrayLetters.Length - 1) Dim rg As Excel.Range = xlSheet.Columns(arrayLetters) rg.Select() rg.Delete() </code></pre> <p>The value of <strong>arrayLetters</strong> is <strong>"G:G,F:F"</strong>. For some reason that doesn't seem to work once it gets there to delete them! Only reason i am doing it this way is so that it doesn't update the table and loop to the other one. In other words, if i delete each one individually then the column moves and the letter will not be the same the next go around.</p> <p>The error is on the <strong>Dim rg As Excel.Range = xlSheet.Columns(arrayLetters)</strong> line and it says:</p> <p><strong>Type mismatch. (Exception from HRESULT: 0x80020005 (DISP_E_TYPEMISMATCH))</strong></p> <p>Any help would be great!</p> <p>David</p> <p><strong>SOLVED</strong></p> <pre><code> For Each lvi In ListView1.Items If lvi.Checked = False Then arrayLetters = lvi.SubItems(2).Text &amp; "," &amp; arrayLetters 'Puts numbers in BACKWORDS End If Next arrayLetters = arrayLetters.Substring(0, arrayLetters.Length - 1) Dim theNumbers As String() = arrayLetters.Split(",") Dim num As Integer = 0 xlApp.ScreenUpdating = False For Each num In theNumbers xlSheet.Columns(num).delete() 'Deletes columns in reverse order (7,5,4...) Next </code></pre>
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