本文整理汇总了C#中System.Data.SqlClient.SqlConnection.StateChange事件的典型用法代码示例。如果您正苦于以下问题：C# SqlConnection.StateChange事件的具体用法？C# SqlConnection.StateChange怎么用？C# SqlConnection.StateChange使用的例子？那么恭喜您, 这里精选的事件代码示例或许可以为您提供帮助。您也可以进一步了解该事件所在类System.Data.SqlClient.SqlConnection的用法示例。
在下文中一共展示了SqlConnection.StateChange事件的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class MainClass{
public static void Main(){
SqlConnection cn = new SqlConnection();
try
{
cn.StateChange += new StateChangeEventHandler(StateChange);
cn.InfoMessage += new SqlInfoMessageEventHandler(InfoMessage);
cn.ConnectionString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;";
cn.Open();
cn.ChangeDatabase("Biblio");
}
catch( Exception ex )
{
Console.WriteLine(ex.Message);
}
finally
{
// Unsubscribe from the Events we subscribed to.
cn.StateChange -= new StateChangeEventHandler(StateChange);
cn.InfoMessage -= new SqlInfoMessageEventHandler(InfoMessage);
}
}
private static void StateChange(object sender, System.Data.StateChangeEventArgs e)
{
Console.WriteLine("State was:" + e.OriginalState.ToString() + ". New state = " + e.CurrentState.ToString() );
}
private static void InfoMessage( object sender, System.Data.SqlClient.SqlInfoMessageEventArgs e)
{
int i;
for (i=0; i < e.Errors.Count; i++ )
{
Console.WriteLine(e.Errors[i].Message);
}
}
}