我遇到了 sql server 2005 SP2 的问题，我创建了一个 Windows 窗体，上面有一个按钮，并执行以下步骤：
- 确保Sql服务正在运行，然后点击按钮，一切OK
- 停止 Sql 服务，然后再次单击按钮，在我的机器上，代码LINE 1没有异常，异常发生在LINE 2，这是异常信息：
消息：向服务器发送请求时发生传输级错误。（提供者：共享内存提供者，错误：0 - 管道的另一端没有进程。）
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace ReconnectSQL
{
public partial class Form1 : Form
{
private string m_ConnectionString = @"Server=(local); Database=testDB; User ID=sa; Password=admins; Connection Timeout=15";
public Form1()
{
InitializeComponent();
}
/// <summary>
///
/// </summary>
public DataTable GetByFillDataTable()
{
try
{
SqlCommand cmd = new SqlCommand("getalldata");
cmd.CommandType = CommandType.StoredProcedure;
DataTable dt = this.GetDataTable(cmd);
return dt;
}
catch
{
throw;
}
}
#region common funcs
/// <summary>
///
/// </summary>
/// <param name="cmd"></param>
/// <returns></returns>
private DataTable GetDataTable(SqlCommand cmd)
{
DataTable dt = new DataTable();
using (SqlConnection conn = new SqlConnection(this.m_ConnectionString))
{
try
{
conn.Open(); // LINE 1
}
catch (Exception eX)
{
throw;
}
using (SqlDataAdapter adapter = new SqlDataAdapter())
{
try
{
cmd.Connection = conn;
cmd.CommandTimeout = conn.ConnectionTimeout;
adapter.SelectCommand = cmd;
adapter.Fill(dt); // LINE 2
}
catch (Exception eX)
{
throw;
}
}
}
return dt;
}
#endregion
private void button2_Click(object sender, EventArgs e)
{
try
{
DataTable dt = GetByFillDataTable();
listBox1.Items.Add("GetByFillDataTable is called without exceptions!");
}
catch (Exception ex)
{
listBox1.Items.Add(ex.Message);
} }
}
}
详细的异常信息：
- [System.Data.SqlClient.SqlException] {"A transport-level error has occurred when sending the request to the server. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)"} System.Data.SqlClient.SqlException
+ base {"A transport-level error has occurred when sending the request to the server. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)"} System.Data.Common.DbException {System.Data.SqlClient.SqlException}
Class 20 byte
+ Errors {System.Data.SqlClient.SqlErrorCollection} System.Data.SqlClient.SqlErrorCollection
LineNumber 0 int
Number 233 int
Procedure null string
Server "(local)" string
Source ".Net SqlClient Data Provider" string
State 0 byte
堆栈跟踪
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParserStateObject.WriteSni()
at System.Data.SqlClient.TdsParserStateObject.WritePacket(Byte flushMode)
at System.Data.SqlClient.TdsParserStateObject.ExecuteFlush()
at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
at ReconnectSQL.Form1.GetDataTable(SqlCommand cmd) in E:\_public_\sqlFail\ReconnectSQL\ReconnectSQL\Form1.cs:line 138