title: Incorrect syntax near ','. Description: An unhandled exception occurred during the execution
body: <p>I know this title seems to be repeated a lot but I tried to search and didn't find the answer.</p>
  
  <p>Code:</p>
  
  <pre><code>using System;
  using System.Configuration;
  using System.Data;
  using System.Data.SqlClient;
  using System.Linq;
  using System.Web;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  
  public partial class _Default : System.Web.UI.Page
  {
      protected void Page_Load(object sender, EventArgs e) {}
  
      protected void gv_master_SelectedIndexChanged(object sender, EventArgs e)
      {
          // Get the currently selected row using the SelectedRow property.
          GridViewRow row = gv_master.SelectedRow;
  
          // Display the first name from the selected row.
          // In this example, the third column (index 2) contains
          // the first name.
          lbl_reqNoV.Text = row.Cells[1].Text;
          lbl_reqNoV.Visible = true;
          lbl_reqNo.Visible = true;
  
          SqlConnection sqlConnection1 = new SqlConnection("Data Source=saitest01;Initial Catalog=SAI_website;Persist Security Info=True;User ID=sa;Password=sai@987");
          SqlCommand cmd = new SqlCommand();
  
          cmd.CommandText = "Select * from purchase Where ReqNo = '" + lbl_reqNoV.Text + "', sqlConnection1";
  
          cmd.CommandType = CommandType.Text;
          cmd.Connection = sqlConnection1;
  
          sqlConnection1.Open();
          SqlDataReader DR1;
          DR1 = cmd.ExecuteReader();
          DR1.Read();
  
          // Data is accessible through the DataDR1 object here
          gv_full.DataSource = DR1;
          gv_full.DataBind();
      }
  }
  </code></pre>