I have this table Profile which has fields with user_Id and regNo and I want to check first if id and email are already exists before proceed to inserting datas. In my codes, I am able to validate only one row (either id or reg number), but if I am going to validate the two of them, it gives me an error, saying "Must declare the scalar variable @userid". I dont know if it is with my select that is wrong or something in my codes
SqlConnection con = new SqlConnection("Data Source=GATE-PC\\SQLEXPRESS;Initial Catalog=dbProfile;Integrated Security=True");
con.Open();
SqlCommand cmdd = new SqlCommand("select * from Profile where user_Id = @userid AND RegNo = @reg", con);
SqlParameter param = new SqlParameter();
//SqlParameter param1 = new SqlParameter();
param.ParameterName = "@userid";
param.ParameterName = "@reg";
param.Value = txtid.Text;
param.Value = txtregNo.Text;
cmdd.Parameters.Add(param);
//cmdd.Parameters.Add(param1);
SqlDataReader reader = cmdd.ExecuteReader();
if (reader.HasRows)
{
MessageBox("User Id/Registry Number already exists");
}
else
{
SqlConnection con = new SqlConnection("Data Source=GATE-PC\\SQLEXPRESS;Initial Catalog=dbProfile;Integrated Security=True");
SqlCommand cmd = new SqlCommand("qry", con);
cmd.CommandType = System.Data.CommandType.Text;
cmd.Parameters.AddWithValue("@id", txtid.Text);
cmd.Parameters.AddWithValue("@regno", txtregNo.Text);
cmd.Parameters.AddWithValue("@name", txtname.Text);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
con.Open();
cmd.ExecuteNonQuery();
MessageBox("successfully saved!");
}
Any help would be appreciated. I am using c# with asp.net. Thank you in advance and God Bless.