Get data from (dr.Reader())

Get data from (dr.Reader()) {}

try
             {                
                 con.Open();
                 SqlCommand cmd = new SqlCommand("Proc_Emp", con);
                 SqlDataAdapter sda = new SqlDataAdapter(cmd);
                 cmd.Parameters.Add("@PNo", SqlDbType.VarChar, 50).Value = comboBox1.Text.Trim();
                 sda.SelectCommand.CommandType = CommandType.StoredProcedure;
                 DataTable dt = new DataTable();
                 sda.Fill(dt);
                 string num = dt.Rows[0][0].ToString();

                 SqlCommand cmd1 = new SqlCommand("select Name from tbl_2 where records='" +       
                   comboBox1.Text + "'", con);
                 SqlDataReader dr = cmd.ExecuteReader();
                 if (dr.Read())
                {
                     string A = dr["Name"].ToString();
                }

                 string max = A +num;

                 con.Close();
             }
             catch (SqlException ex)
             {
                 MessageBox.Show("Error: " + ex);
             }
             finally
             {
                 string r= max;                  
                 textBox1.Text = r;                
             }

2020-06-04

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