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Fill a Listbox with value selected from a Dropdownlist in

16041984 asked:

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i have dropdown list i select value from dropdown list when i select consultant name from dropdownlist i want to show email id of that consultant in is this possible?
i write this code but it gives error
protected void  DDConsultantName_SelectedIndexChanged(object sender, EventArgs e)
       SqlConnection cn = new SqlConnection();
       cn.ConnectionString = ConfigurationManager.ConnectionStrings["Homeconstr"].ConnectionString;
       SqlCommand command = new SqlCommand("select ContactPerson_EmailID from Consultant_Detail where Consultant_Name=" + this.DDConsultantName.SelectedValue, cn);
       SqlDataAdapter dataAadpter = new SqlDataAdapter(command);
       DataSet ds = new DataSet();
       LBEmailId.DataSource = ds;
       LBEmailId.DataTextField = "ContactPerson_EmailID";
       //LBEmailId.DataValueField = "Id";

when i select e.g morphees consultant from dropdown i want to show his email id in LBemail id listbox ?????????


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