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

SqlException.Errors

 
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();
            }
         }
   }
}

SqlException.LineNumber

 

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();
            }
         }
   }
}

SqlException.Number

 

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();
            }
         }
   }
}