Csharp/C Sharp by API/System.Data.SqlClient/SqlException

SqlException.Errors

<source lang="csharp"> using System; using System.Data; using System.Data.SqlClient; class MainClass {

  static void Main()
  {
        SqlConnection conn = new SqlConnection(@"data source = .\sqlexpress;integrated security = true;database = northwnd");
        SqlCommand cmd = conn.CreateCommand();
        cmd.rumandType = CommandType.StoredProcedure;
        cmd.rumandText = "error command";
        try
        {
           conn.Open();
           cmd.ExecuteNonQuery();
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
           for (int i = 0; i < ex.Errors.Count; i++)
           {
                Console.WriteLine("Index #" + i);
                Console.WriteLine("Exception: " + ex.Errors[i].ToString() );
                Console.WriteLine("Number: " + ex.Errors[i].Number.ToString() );
           }
        }
        catch (System.Exception ex)
        {
           Console.WriteLine("Source: " + ex.Source);
           Console.WriteLine("Exception Message: " + ex.Message);
        }
        finally
        {
           if (conn.State == ConnectionState.Open)
           {
              Console.WriteLine("Finally block closing the connection");
              conn.Close();
           }
        }
  }

}

 </source>

SqlException.LineNumber

<source lang="csharp">

using System; using System.Data; using System.Data.SqlClient; class MainClass {

  static void Main()
  {
        SqlConnection conn = new SqlConnection(@"data source = .\sqlexpress;integrated security = true;database = northwind");
        SqlCommand cmd = conn.CreateCommand();
        cmd.rumandType = CommandType.StoredProcedure;
        cmd.rumandText = "sp_DbException_1";
        try
        {
           conn.Open();
           cmd.ExecuteNonQuery();
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
           Console.WriteLine("Source: " + ex.Source);
           Console.WriteLine("Number: "+ ex.Number.ToString());
           Console.WriteLine("Message: "+ ex.Message);
           Console.WriteLine("Class: "+ ex.Class.ToString ());
           Console.WriteLine("Procedure: "+ ex.Procedure.ToString());
           Console.WriteLine("Line Number: "+ex.LineNumber.ToString());
           Console.WriteLine("Server: "+ ex.Server.ToString());
        }
        catch (System.Exception ex)
        {
           Console.WriteLine("Source: " + ex.Source);
           Console.WriteLine("Exception Message: " + ex.Message);
        }
        finally
        {
           if (conn.State == ConnectionState.Open)
           {
              Console.WriteLine("Finally block closing the connection");
              conn.Close();
           }
        }
  }

}

 </source>

SqlException.Number

<source lang="csharp">

using System; using System.Data; using System.Data.SqlClient; class MainClass {

  static void Main()
  {
        SqlConnection conn = new SqlConnection(@"data source = .\sqlexpress;integrated security = true;database = northwind");
        SqlCommand cmd = conn.CreateCommand();
        cmd.rumandType = CommandType.StoredProcedure;
        cmd.rumandText = "sp_DbException_1";
        try
        {
           conn.Open();
           cmd.ExecuteNonQuery();
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
           Console.WriteLine("Source: " + ex.Source);
           Console.WriteLine("Number: "+ ex.Number.ToString());
           Console.WriteLine("Message: "+ ex.Message);
           Console.WriteLine("Class: "+ ex.Class.ToString ());
           Console.WriteLine("Procedure: "+ ex.Procedure.ToString());
           Console.WriteLine("Line Number: "+ex.LineNumber.ToString());
           Console.WriteLine("Server: "+ ex.Server.ToString());
        }
        catch (System.Exception ex)
        {
           Console.WriteLine("Source: " + ex.Source);
           Console.WriteLine("Exception Message: " + ex.Message);
        }
        finally
        {
           if (conn.State == ConnectionState.Open)
           {
              Console.WriteLine("Finally block closing the connection");
              conn.Close();
           }
        }
  }

}

 </source>