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POUsing Interop.Excel to open excel document. Too few worksheets is loaded
 

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  1. POUsing Interop.Excel to open excel document. Too few worksheets is loaded
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    <p>I'm having a problem with the <code>Microsoft.Office.Interop.Excel</code> api (using C#). Once I load an existing .xls file using the method shown beneath, and then requests a specific worksheet, that I know for a fact exists within the .xls file, I just get an exception. </p> <p>The .xls file I load is huge, and got about 35 worksheets, but the strange thing is that it seems like only the first 3 worksheets of the document is ever loaded.</p> <pre><code>//Code to load document var xlApp = new Microsoft.Office.Interop.Excel.Application(); var xlWorkBook = xlApp.Workbooks.Open("PathAndNameOfMyFile.xls", 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0); //code that fails or just returns bad ansvers: //This code just returns a list of 3 worksheets var test = xlWorkBook.Worksheets.Cast&lt;Worksheet&gt;().ToList(); //The first 3 worksheets loads fine, but not the fourth: var sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);//ok sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(2);//ok sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(3);//ok sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(4);//fails //also the command xlWorkBook.Worksheets.Count returns 3. </code></pre> <p>So does anyone have an idea of why this is the case? Any ideas wold be greately appreciated.</p> <p>UPDATE: When opening the xls file I discovered that it actually seems like excel interop opens a referenced xla file within the xls file instead. If this is the case, that would explain why the number of sheets returns wrong - have anyone seen this behaviour before?</p>
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    1. PTQuestion
    1. USpnuts
    1. USMichael
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    1. COYour workbook has three worksheets.
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    2. COThe only way this is possible is if your workbook has 3 sheets, so make sure you're pointing to the correct path + when using interop, for values you don't want to fill, for eg "" use the missing value - private static System.Reflection.Missing mis = System.Reflection.Missing.Value;
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      1. USBob
    3. COWhat does Workbook.Sheets.Count() return?
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      1. USWorldIsRound
 

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