First Connection After SQLServer Restart Fails

Hello everybody.

I'm having an odd issue here. First off, let me tell you I've already spent hours trying to solve this and looking for any similar problem in forums with no luck.

I have a very simple application (built to test this issue) which connects to SQLServer 2K, and retrieves some information from a table. It works fine. Then I stop the server, wait, and bring it up again. When I try to execute the query, it will fail only the first time, and then work.

The application was written in C#.
The exception thrown is "...A transport-level error has occurred when sending the request to the server....".
Please, remember, the server IS up, and working fine. I've also tried variants of this code, not just with select querys, but also insert.. with different objects as well.

I'll post some of this codes, so you can check.
If anyone knows about what may be happening I'd be truly thankfull for your input.

Thank's in advance!

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.SqlClient;using System.Drawing;using System.Text;using System.Windows.Forms;namespace ABMprueba{ public partial class Form1 : Form { private SqlConnection conn; public Form1() { conn = new SqlConnection(); conn.ConnectionString = "Server=USER;Database=test;User ID=sa;Password=1234;Application Name=ABMPrueba"; InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { try { conn.Open(); SqlCommand cmd = conn.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText ="select * from a;"; SqlDataAdapter adapter = new SqlDataAdapter(cmd); DataSet output = new DataSet(); adapter.Fill(output); this.dataGridView1.DataSource = output.Tables[0].DefaultView; } catch (Exception ex) { System.Windows.Forms.MessageBox.Show(ex.Message); } finally { conn.Close(); } } }}


=========================== option 2

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.SqlClient;using System.Drawing;using System.Text;using System.Windows.Forms;namespace ABMprueba{ public partial class Form1 : Form { private SqlConnection conn; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { try { conn = new SqlConnection("Server=MBESTEIRO;Database=prue;User ID=sa;Password=barza04;Application Name=ABMPrueba"); conn.Open(); SqlCommand cmd = conn.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "select * from test;"; SqlDataReader dr = cmd.ExecuteReader(); DataTable dt = new DataTable(); dt.Load(dr); this.dataGridView1.DataSource = dt.DefaultView; } catch (Exception ex) { System.Windows.Forms.MessageBox.Show(ex.Message); } finally { conn.Close(); } } }}


=========================== option 3

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.SqlClient;using System.Drawing;using System.Text;using System.Windows.Forms;namespace ABMprueba{ public partial class Form1 : Form { private SqlConnection conn; public Form1() { conn = new SqlConnection(); conn.ConnectionString = "Server=MBESTEIRO;Database=prue;User ID=sa;Password=barza04;Application Name=ABMPrueba"; InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { try { conn.Open(); SqlCommand cmd = conn.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "insert into a values ('John');"; int recordsAffected = cmd.ExecuteNonQuery(); } catch (Exception ex) { System.Windows.Forms.MessageBox.Show(ex.Message); } finally { conn.Close(); } } }}