display data from database base on date

public ActionResult search(DateTime StartDate, DateTime enddate)

{

string EmpVisitor = @"Data Source=UTSIN-15;User ID=sa;Password=unified;Initial Catalog=EmpVisitor;MultipleActiveResultSets=True;Application Name=EntityFramework";

DataTable dtbl = new DataTable();

using (SqlConnection sqlcon = new SqlConnection(EmpVisitor))

{

sqlcon.Open();

SqlDataAdapter sqlda = new SqlDataAdapter("select * from dbo.visitordetails where Date Between '" + StartDate + "' And '" + enddate + "'", sqlcon);

sqlda.Fill(dtbl);

//return RedirectToAction("List");

}

return View(dtbl);

}

 

 

 

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im getting the datatable empty