loading data from database to datagridview

hello there
I'm trying to load data from my sql server database to a daatagriedview on my windows form application but its not loading pls help me here is my code
        private void findBtn_Click(object sender, EventArgs e)
        {
            // loading data from the database
            string connectionString = @"Data Source=JEREMIAH-HP\sqlexpress;Initial Catalog=CourseInfo;   
                                                       Integrated Security=True";
            SqlConnection sqlCon = new SqlConnection(connectionString);
            sqlCon.Open();
            string commandString = "select * from STUDINFO_TBL where MATRICNO='" + entmatno.Text + "'"+
                                   "SELECT * from COURSEINFO_TBL WHERE MATRICNO='" + entmatno.Text +"'";
            SqlCommand sqlCmd = new SqlCommand(commandString, sqlCon);
            SqlDataReader read = sqlCmd.ExecuteReader();
            SqlDataAdapter da = new SqlDataAdapter(sqlCmd);
            DataTable dataTable = new DataTable();
            while (read.Read())
            {
                mNo.Text = read["MATRICNO"].ToString();
                fName.Text = read["FIRST_NAME"].ToString(); 
                lName.Text = read["LAST_NAME"].ToString();
                Dept.Text = read["DEPT"].ToString();
                level.Text = read["LEVEL"].ToString();
                cgpa.Text = read["CGPA"].ToString();

               
              
                dgvresult.DataSource = da;
                dgvresult.Columns[0].Name = "MATRICNO";
                dgvresult.Columns[1].Name = "CRS_CDE";
                dgvresult.Columns[2].Name = "CRS_UNT";
                dgvresult.Columns[3].Name = "CRS_PNT";
                dgvresult.Columns[4].Name = "CRS_SCRE";
                dgvresult.Columns[5].Name = "CRS_GP";
            }
            read.Close();
           
      }
please where I'm i missing it?