How to import all the Excel sheets to DataSet in C#

Question

I\'ve searched internet for this and couldn\'t really find a question like it. Everyone was looking for a way to import an individual sheet in the excel file but what I want

Answer 1

The function that was suggested by Avitus is correct but it has logica error, you must rewrite in :

DataTable dtImport = new DataTable();
using ( System.Data.OleDb.OleDbConnection myConnection = new System.Data.OleDb.OleDbConnection(
            "Provider=Microsoft.ACE.OLEDB.12.0; " +
             "data source='" + filename + "';" +
                "Extended Properties=\"Excel 12.0;HDR=YES;IMEX=1\" ")){


using ( System.Data.OleDb.OleDbDataAdapter myImportCommand = new System.Data.OleDb.OleDbDataAdapter("select * from [" + sheetName + "$]", myConnection))
myImportCommand.Fill(dtImport);
} return dtImport;

this is correct, otherwise you must dispose connection and dataadapter manually.