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POI want to Read Multiple excel sheets in one file without using OLEDB in C#
 

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  1. POI want to Read Multiple excel sheets in one file without using OLEDB in C#
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    <p>Im reading an Excel document from C# Windows Form.. There are 25 worksheets in Excel Workbook.. i can read 1st worksheet successfully.. But when i change it to worksheet 2.. it won't working at all.. Im not using OLEDB..</p> <p>I want to read 100 Row in every sheet.. following is my code...</p> <pre><code>` dt.Columns.Add("Amount", typeof(double)); dt.Columns.Add("ChequeNo", typeof(int)); dt.Columns.Add("month", typeof(int)); int AmountRow = 100; int ChequeNoRow = 101; int Column = 3; xlApp = new Excel.ApplicationClass(); xlWorkBook = xlApp.Workbooks.Open(path, 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0); xlWorkSheet = (Excel.Worksheet)xlWorkBook.Sheets[2];\\This place is the changing worksheets range = xlWorkSheet.UsedRange; double chequeAmount; double chequeNo; for (int i = Column; i &lt; 15; i++) { chequeAmount = (double)(range.Cells[AmountRow, i] as Excel.Range).Value2; chequeNo = (double)(range.Cells[ChequeNoRow, i] as Excel.Range).Value2; if (chequeNo != 0.0) { dt.Rows.Add(Convert.ToDouble(chequeAmount), Convert.ToInt32(chequeNo), i); } } dataGridView1.DataSource = dt; xlWorkBook.Close(true, null, null); xlApp.Quit(); releaseObject(xlWorkSheet); releaseObject(xlWorkBook); releaseObject(xlApp);` </code></pre> <p>releaseObject methods are not here.. those working perfectly... </p> <pre><code> `xlWorkSheet = (Excel.Worksheet)xlWorkBook.Sheets[1];` </code></pre> <p>This is how i change my worksheets.. The following line gives an exception..[Null point Exception]</p> <p><code>chequeAmount = (double)(range.Cells[AmountRow, i] as Excel.Range).Value2;</code></p> <p>Hope you'll know answers..</p>
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    1. UStharindlaksh
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    1. COUse [Linq-To-Excel](http://code.google.com/p/linqtoexcel/) instead. It's absolutely awesome.
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      1. POI want to Read Multiple excel sheets in one file without using OLEDB in C#
      1. USEnigmativity
    2. COThere were some exceptions bro... we adviced not to use any LinQ at all.. thats the problem.. thankz for comment..
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      1. POI want to Read Multiple excel sheets in one file without using OLEDB in C#
      1. UStharindlaksh
    3. COThat seems to be an odd requirement. Why can't you use LINQ?
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      1. POI want to Read Multiple excel sheets in one file without using OLEDB in C#
      1. USEnigmativity
 

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