Read Excel Missing Data

Here is the backend code for a peice of code I am working on.

private void Page_Load(object sender, System.EventArgs e)
            {
                  // Create connection string variable. Modify the "Data Source"
                  // parameter as appropriate for your environment.
                  String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
                        "Data Source=C:\\exceltest.xls" + ";" +
                        "Extended Properties=Excel 8.0;";

                  // Create connection object by using the preceding connection string.
                  OleDbConnection objConn = new OleDbConnection(sConnectionString);

                  // Open connection with the database.
                  objConn.Open();

                  // The code to follow uses a SQL SELECT command to display the data from the worksheet.

                  // Create new OleDbCommand to return data from worksheet.
                  OleDbCommand objCmdSelect =new OleDbCommand("SELECT * FROM RecordData", objConn);

                  // Create new OleDbDataAdapter that is used to build a DataSet
                  // based on the preceding SQL SELECT statement.
                  OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();

                  // Pass the Select command to the adapter.
                  objAdapter1.SelectCommand = objCmdSelect;

                  // Create new DataSet to hold information from the worksheet.
                  DataSet objDataset1 = new DataSet();

                  // Fill the DataSet with the information from the worksheet.
                  objAdapter1.Fill(objDataset1, "XLData");

                  // Bind data to DataGrid control.
                  DataGrid1.DataSource = objDataset1.Tables[0].DefaultView;
                  DataGrid1.DataBind();

                  // Clean up objects.
                  objConn.Close();

            }

This is a C-sharp backend for an ASP.NET page. What I am trying to do is read in Data from Excel and pump in out into a DataGrid. I have taken this from the Microsoft KB because I am trying to figure out why it ignores different data types such as dates. The end goal for me is to have a web based app that will read in any excel page and convert it for the web to a datagrid. I have tried to set the HDR=NO;IMEX=1; but that gives me an error, and I cannot seem to get rid of it.  the error was "Could not find installable ISAM."
Any Ideas?