how to get excel sheet name using datatable in c# -


i using following code data excel sheet:- 

private static datatable getdatafromcsvfile(string csv_file_path)     {         datatable csvdata = new datatable();         using (textfieldparser csvreader = new textfieldparser(csv_file_path))         {             csvreader.setdelimiters(new string[] { "," });             csvreader.hasfieldsenclosedinquotes = true;             string[] colfields = csvreader.readfields();             foreach (string column in colfields)             {                 datacolumn datecolumn = new datacolumn(column);                 datecolumn.allowdbnull = true;                 csvdata.columns.add(datecolumn);             }             while (!csvreader.endofdata)             {                 string[] fielddata = csvreader.readfields();                 //making empty value null                 (int = 0; < fielddata.length; i++)                 {                     if (fielddata[i] == "")                     {                         fielddata[i] = null;                     }                 }                 csvdata.rows.add(fielddata);             }             return csvdata;         }     }

but need retrieve same sheets within same workbook. idea how can using datatable in c#.

thanks

"as users input data in excel sheets" doesn't mean input xls or xlsx file. may mean users use ms excel edit csv. can create "true excel" file data 4 source csv files , read new single file, need api, not textfieldparser. read new xlsx files use documentformat.openxml assembly. quick sample is

      using (var doc = spreadsheetdocument.open(_docpath, false))       {             var sheet = doc.workbookpart.workbook.sheets.elements<sheet>().first()             //or iterate on sheets, sheet name, read it's data etc.             //i'm sure can find lot of samples              var worksheetpart = (worksheetpart)doc.workbookpart.getpartbyid(sheet.id);             var sheetdata = worksheetpart.worksheet.getfirstchild<sheetdata>();              foreach (var row in sheetdata.elements<row>())             {                     //some code here             }       }

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