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

Because I was bored:

 static void Main(string[] args)
 {
            string filename = @"c:\temp\myfile.xlsx";    
            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\" ");
            myConnection.Open();
            DataTable mySheets = myConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });                
            DataSet ds = new DataSet();
            DataTable dt;

            for (int i = 0; i <= mySheets.Rows.Count; i++)
            {
                   dt =   makeDataTableFromSheetName(filename, mySheets.Rows[i]["TABLE_NAME"].ToString());
                   ds.Tables.Add(dt);
            }
 }

private static DataTable makeDataTableFromSheetName(string filename, string sheetName)
{      
    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\" ");

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