Read Excel File + C#

[sonia.sardana]

I have excel file.I want to fill dataset from that excel file & Have to fill the database. I m able to read the excel file,but there is one problem with column whose datatype is Date.

Actual Payment Date
12/15/2009

If I have the above date, means first number is 12 --(Equal to number of months). Then in dataset data is comng correctly frm the excel file,If I have 13/15/2009 then for this value in dataset "" is there. Y so??.I want the dataset to be filled & want my dates in excel format to be dd/mm/yyyy. I just want that if the date is 13/15/2006,It will come in my dataset ,dat is filled from the excel file.

 protected void BtnSubmit_Click(object sender, EventArgs e)
    {
        if (FileUpload1.HasFile)
        {
                //FileUpload1.SaveAs(Server.MapPath("Upload/" + FileUpload1.FileName));
            //String sConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("Upload/" + FileUpload1.FileName) + ";Extended Properties=Excel 8.0;";
                String sConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FileUpload1.PostedFile.FileName  + ";Extended Properties=Excel 8.0;";
            OleDbConnection Exlcon = new OleDbConnection(sConnectionString);
            string sDate="";
            string sRowsNtInserted = "";
            int iRows = 0;
            DateTime date1;
            string sMonthName="";

            try
            {
                Exlcon.Open();
            }
            catch
            {
                ShowAlertMessage("Please select valid excel file.");
                return;
            }
            OleDbCommand objCmdSelect = new OleDbCommand("SELECT * FROM [Sheet1$]", Exlcon);
            OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();
            objAdapter1.SelectCommand = objCmdSelect;
            DataSet objDataset1 = new DataSet();
            objAdapter1.Fill(objDataset1, "XLData");

I have attached the excel file (Pic1).
In Pic2,I have attached the snapshot of dataset that is filled.