TITLE: Connect to Server
------------------------------
Cannot connect to Thejus-PC.
------------------------------ ADDITIONAL INFORMATION:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or
> was not accessible. Verify that the instance name is correct and that
> SQL Server is configured to allow remote connections. (provider: Named
> Pipes Provider, error: 40 - Could not open a connection to SQL Server)
> (.Net SqlClient Data Provider)
>
> ------------------------------ For help, click: …Run Code Online (Sandbox Code Playgroud) 我试图使用托管网络核心功能托管Web应用程序(aspx Web表单).
当我试图加载aspx页面时使用这个,我收到错误
错误详情 :
回应:502
与"localhost"的连接失败.错误:ConnectionRefused(0x274d).System.Net.Sockets.SocketException无法建立连接,因为目标计算机主动拒绝它127.0.0.1:8080
然后我将CodeBehind属性更改为CodeFile,之后我收到此错误:
你调用的对象是空的.
描述:执行当前Web请求期间发生未处理的异常.请查看堆栈跟踪以获取有关错误及其源自代码的位置的更多信息.
异常详细信息:System.NullReferenceException:未将对象引用设置为对象的实例.
来源错误:
在执行当前Web请求期间生成了未处理的异常.可以使用下面的异常堆栈跟踪来识别有关异常的起源和位置的信息.
堆栈跟踪:
[NullReferenceException:对象引用未设置为对象的实例.]
System.Web.HttpResponse.ApplyRedirectQueryStringIfRequired(String url)+144 System.Web.HttpResponse.Redirect(String url,Boolean endResponse)+546
System.Web.Security. FormsAuthenticationModule.OnLeave(Object source,EventArgs eventArgs)+1730
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()+ 412 System.Web.HttpApplication.ExecuteStep(IExecutionStep step,Boolean&completedSynchronously)+229
在同一个应用程序中我有一个html格式的测试页面.当我试图访问该页面时,它正在正确呈现.
这里也添加了我的配置文件
在我的程序中,我使用 try catch 块来捕获错误详细信息并记录到日志表中以供将来参考。但使用Error_message()它只能获取最后一条错误消息。
例如,执行以下代码时,它会生成两条错误消息
ALTER TABLE [MFClassProperty]
DROP CONSTRAINT [FK_MFClassProperty_MFProperty]
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错误消息是
Msg 3728, Level 16, State 1, Line 161
'FK_MFClassProperty_MFProperty2' is not a constraint.
Msg 3727, Level 16, State 0, Line 161
Could not drop constraint. See previous errors.
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使用我的 try catch 块,它只记录最后一条错误消息,通过该消息很难找到问题。
有没有办法获得这两个错误消息[在这种情况下]。
我的 catch 块代码添加在下面
BEGIN CATCH
ROLLBACK TRANSACTION
SET NOCOUNT ON
IF @Debug > 0
BEGIN
--------------------------------------------------
-- INSERTING ERROR DETAILS INTO LOG TABLE
--------------------------------------------------
INSERT INTO MFLog (
SPName
,ErrorNumber
,ErrorMessage
,ErrorProcedure
,ErrorState …Run Code Online (Sandbox Code Playgroud) error:- expected ';' at the end of the declaration list
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#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
{
float number; error:- expected ';' at the end of the declaration list
float result;
int currentoperation;
__weak IBOutlet UILabel *label;
}
- (IBAction)canceloperation:(id)sender;
- (IBAction)cancelnumber:(id)sender;
- (IBAction)buttonoperation:(id)sender;
- (IBAction)buttonnumber:(id)sender;
@end
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请修复此代码.
sql-server ×2
.net ×1
asp.net ×1
c# ×1
expectations ×1
objective-c ×1
sql ×1
try-catch ×1
windows-10 ×1