如何检查异常是否是Oracle异常？

Question

我想处理应用程序级别的任何Oracle Db异常。因此在Global.asax的Application_Error函数中编写了下面的一段代码

代码似乎更具体，但我想为任何类型的Oracle异常。

protected void Application_Error(object sender, EventArgs e) 
{ 
    var isOracleException = false; 
    //Get the error details. 
    Exception lastException = Server.GetLastError(); 
    if (lastException != null) 
    { 
     if (lastException.Message.StartsWith("ORA")) 
     { 
      isOracleException = true;  
     } 
    } 
    HttpContext httpContext = (sender as MvcApplication).Context; 
    httpContext.ClearError(); 
    httpContext.Response.Clear(); 
    httpContext.Response.TrySkipIisCustomErrors = true; 
    RouteData routeData = new RouteData(); 
    if (isOracleException) 
    { 
     routeData.Values["controller"] = "HandleError"; 
     routeData.Values["action"] = "Error"; 

     IController errorController = new HandleErrorController(); 
     var requestContext = new RequestContext(new HttpContextWrapper(httpContext), routeData); 
     errorController.Execute(requestContext); 
    } 
} 

我们可以在Global.asax文件中访问OracleException类吗？

Answer 1

可以检查的异常是OracleException使用is或as：

if (lastException is OracleException) 
{ 
    isOracleException = true; 
    // or 
    // do something 
} 

或者：

OracleException oex = lastException as OracleException; 

if (oex != null) 
{ 
    // do something with oex 
}