exceptionexample.aspx
来自「asp.net专家200问(含源代码解决法案」· ASPX 代码 · 共 54 行
ASPX
54 行
<% @Import Namespace="System.Data.SqlClient" %>
<HTML>
<HEAD>
<title>数据库异常处理示例</title>
<script language=C# runat=server>
void Page_Load(object sender, System.EventArgs e)
{
Connection();
}
public void Connection()
{
// 连接字符串
string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["ConnectionSqlServer"];
string Sql = "1SELECT * FROM Employees";
// 创建 SqlConnection 和 SqlCommand 对象
SqlConnection thisConnection = new SqlConnection(ConnectionString);
SqlCommand thisCommand = new SqlCommand(Sql, thisConnection);
try
{
thisConnection.Open();
thisCommand.ExecuteNonQuery();
myLabel.Text = "未出现异常!";
}
catch(SqlException ex)
{
// 异常信息显示
myLabel.Text = "<b>数据库执行错误</b><br>";
myLabel.Text += "错误信息:" + ex.Source + "<br>";
myLabel.Text += "错误行号:" + ex.LineNumber +"行<br>";
myLabel.Text += "详细信息:" + ex.Message + "<br>";
}
finally
{
// 关闭数据库连接
thisConnection.Close();
}
}
</script>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<h3>数据库异常处理示例</h3>
<asp:Label ID=myLabel Runat=server></asp:Label>
</form>
</body>
</HTML>
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