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POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
 

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  1. POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
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    <h1>What I want to do</h1> <p>I'm trying to use the <a href="http://msdn.microsoft.com/en-us/library/microsoft.office.interop.excel%28v=office.14%29.aspx" rel="nofollow noreferrer"><strong>Microsoft.Office.Interop.Excel</strong> namespace</a> to open an Excel file (XSL or CSV, but sadly <strong>not</strong> XSLX) and import it into a DataSet. I don't have control over the worksheet or column names, so I need to allow for changes to them.</p> <h1>What I've tried</h1> <p>I've tried the <a href="http://www.c-sharpcorner.com/uploadfile/yuanwang200409/102242008174401pm/1.aspx" rel="nofollow noreferrer">OLEDB method</a> of this in the past, and had a lot of problems with it (buggy, slow, and required prior knowledge of the Excel file's schema), so I want to avoid doing that again. What I'd like to do is use Microsoft.Office.Interop.Excel to import the workbook directly to a DataSet, or loop through the worksheets and load each one into a DataTable.</p> <p>Believe it or not, I've had trouble finding resources for this. <a href="https://stackoverflow.com/search?page=3&amp;tab=relevance&amp;q=c#%20excel%20dataset">A few searches on StackOverflow</a> have found mostly people trying to do the reverse (DataSet => Excel), or the OLEDB technique. Google hasn't been much more helpful.</p> <h1>What I've got so far</h1> <pre><code> public void Load(string filename, Excel.XlFileFormat format = Excel.XlFileFormat.xlCSV) { app = new Excel.Application(); book = app.Workbooks.Open(Filename: filename, Format: format); DataSet ds = new DataSet(); foreach (Excel.Worksheet sheet in book.Sheets) { DataTable dt = new DataTable(sheet.Name); ds.Tables.Add(dt); //??? Fill dt from sheet } this.Data = ds; } </code></pre> <p>I'm fine with either importing the entire book at once, or looping through one sheet at a time. Can I do this with Interop.Excel?</p>
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    1. USJustin Morgan
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      1. POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
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      1. POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
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    1. COAdding bounty because I'd really like to know if Interop.Excel has this capability. I'll award the bounty if anyone can get the data that way, as automagically as possible, without prior knowledge of the Excel file's contents.
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      1. POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
      1. USJustin Morgan
    2. COThis is possible _if_ you can guarantee something about the data beforehand. What I am afraid of is that you want something to work for any old workbook to go in and pull out the tabular data. That tabular data would either need to be demarcated by named ranges or it would have to follow some sort of convention. If it followed the convention that every sheet in the workbook looked exactly like a record set with a header row in row 1 then it would be possible. Otherwise, you would be out of luck...
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      1. POHow do I import from Excel to a DataSet using Microsoft.Office.Interop.Excel?
      1. USadamleerich
 

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