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Read and Write excel file from C# |
Posted Date: 16 Jun 2004 Posted By:: Johnny Yammine Member Level: Bronze Member Rank: 0 Points: 2
Responses:
4
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Hi,
Please if somebody can help me,
I am working project in C#, and i am in need to Open an existing xls file, read, write and save the xls file from C# .
so if somebody can help me
Thank u a lot
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Responses
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#924 Author: Satheesh Karthikeyan Member Level: Bronze Member Rank: 0 Date: 16/Jun/2004 Rating:  Points: 2 |
Hi
1. In your project, Add reference to COM object library named under COM tab - Microsoft Excel 9.0 Object Library.
2. After you add reference, (Interop.Excel.dll and Interop.Office.dll) files are copied to your bin directory.
3. Excel.Application ExcelObj = = new Excel.Application();
4. Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open(
<Your File Name>, 0, true, 5,
"", "", true, Excel.XlPlatform.xlWindows, "\t", false, false,
0, true);
(Look in Object Browser for this method parameters)
5. Excel.Sheets sheets = theWorkbook.Worksheets; (To get the worksheets)
6. Excel.Worksheet worksheet = (Excel.Worksheet)sheets.get_Item(1); (Get the first work sheet)
7. You can read / write the values in worksheet using WorkSheet object created above.
Use Object Browser to view the properties / methods of WorkSheet object.
-SatheeshKarthik
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| #935 Author: S S Member Level: Bronze Member Rank: 0 Date: 17/Jun/2004 Rating: Points: 2 |
Excel workbook can be opened just like any other OleDB like Access DB
Connection string
urlPath=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Book1.xls;Extended Properties=Excel 8.0;HRD=1;IMEX=1";
All Sql statemnets like select,update,delete etc. function on Excel DB
Select Name from [Sheet1$]
Name is column header
Instead of fieldnames use column names.
Instead of table use Sheet Names
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| #952 Author: Johnny Yammine Member Level: Bronze Member Rank: 0 Date: 17/Jun/2004 Rating: Points: 2 |
thank u Satheeshkarthik
I was doing the same as u are saying, the problem that i ad is exactly in the fourth step, when i write the following:
Excel.Workbook theWorkbook = ExcelObj.Workbooks.Open(
, 0, true, 5,
"", "", true, Excel.XlPlatform.xlWindows, "\t", false, false,
0, true);
so i put the name of the file after Open as the first argument, for example the file name is test, i tried ......Open(test,0,true......);
so the compiler gave me an error "the name file does not exist in the class or namespace
i also tried to put test.xls and i tried to put the path before, but always i have an error.
Thank u for your help
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| #205071 Author: Filip Member Level: Silver Member Rank: 0 Date: 21/Mar/2008 Rating: Points: 2 |
There are better ways to Read/Write XLS/CSV/HTML/XLSX files than Excel Automation (http://www.gemboxsoftware.com/GBSpreadsheet.htm). You can use our Free Spreadsheet .NET Component (http://www.gemboxsoftware.com/GBSpreadsheetFree.htm) even in your commercial applications.
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