Error In The Application Exception
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Error In The Application C#
Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges application error exception eaccessviolation in module Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: application error security exception java Sign up How to see what has gone wrong (exception)? up vote 0 down vote favorite I'm working on an application that opens a database connection and retrieving data from it to be showed to the user. Everything looks fine in the code of what I can see, but something is wrong because an exception gets thrown in the method below. I
Windows Application Error The Exception Breakpoint
have placed a breakpoint at "conn.Open();" and it's there the exception is thrown. I have no idea how to find out what the actual error is and how to solve it, and hope to get some help here. The stack trace for the exception can be found here if it helps. The exception is: System.ApplicationException: Error in the application Thanks in advance! the method that throws the exception: public List
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System Exception Vs Application Exception In C#
in 1 second. .NET Framework 4.6 and 4.5 .NET Framework Class Library System System ApplicationException Class ApplicationException Class ApplicationException Class _AppDomain Interface AccessViolationException Class Action Delegate http://stackoverflow.com/questions/9666600/how-to-see-what-has-gone-wrong-exception Action(T) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) Delegate Action(T1, https://msdn.microsoft.com/en-us/library/system.applicationexception(v=vs.110).aspx T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16) Delegate Action(T1, T2) Delegate Action(T1, T2, T3) Delegate Action(T1, T2, T3, T4) Delegate Action(T1, T2, T3, T4, T5) Delegate Action(T1, T2, T3, T4, T5, T6) Delegate Action(T1, T2, T3, T4, T5, T6, T7) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8) Delegate Action(T1, T2, T3, T4, T5, T6, T7, T8, T9) Delegate ActivationContext Class ActivationContext.ContextForm Enumeration Activator Class AggregateException Class AppContext Class AppDomain Class AppDomainInitializer Delegate AppDomainManager Class AppDomainManagerInitializationOptions Enumeration AppDomainSetup Class AppDomainUnloadedException Class ApplicationException Class ApplicationException Constructor ApplicationException Methods ApplicationException Properties ApplicationException Events ApplicationId Class ApplicationIdentity Class ArgIterator Structure ArgumentException Class ArgumentNullException Class ArgumentOutOfRangeException Class ArithmeticException Class Array Class ArraySegment(T) Structure ArrayTypeMismatchException Class AssemblyLoadEventArgs Class AssemblyLoadEventHandler Delegate AsyncCallback Delegate Attri
are provide a structured, uniform, and type-safe way of controlling both system level and application level abnormal conditions. It can be generated by system or can be generated programmatically. System level Exceptions System exceptions http://net-informations.com/faq/general/exceptions.htm are derive directly from a base class System.SystemException. A System level Exception https://www.owasp.org/index.php/Error_Handling is normally thrown when a nonrecoverable error has occurred, such as a database crash. These are common exceptions that are thrown by the .NET Common Language Runtime and used in almost all .Net applications. Exception Syntax: Application level Exceptions Application exceptions can be user defined exceptions thrown by the applications. If you error in are designing an application that needs to create its own exceptions class, you are advised to derive custom exceptions from the System.ApplicationException class. It is typically thrown when a recoverable error has occurred, such as an invalid input argument values to a business method. It will alert the client of application specific or business logic issues; they do not report system level exceptions In most error in the cases, clients can be return to normal processing after solving application exceptions. Exception Handling Exceptions are the occurrence of some condition that changes the normal flow of execution. In .NET languages , Structured Exceptions handling is a fundamental part of Common Language Runtime. More about.... Exception Handling How to throw Exception Exception objects that describe an error are created and then thrown with the throw keyword. By using a throw statement inside a catch block, we can change the resulting exception. More about.... throw exception How to create a custom exception If you want users to be able to programmatically distinguish between some error conditions, you should create your own custom exceptions. It will simplify and improve the error handling and thus increase the overall code quality. More about.... Create a custom exception Next:Difference between sub-procedure and function Difference between a Value Type and a Reference Type Difference between sub-procedure and function What does the term immutable mean What does the keyword static mean this.close() Vs Application.Exit() Difference between a.Equals(b) and a == b Difference between Hashtable and Dictionary Difference between Exception and Error C# Dictionary Versus List Lookup Time Difference bet
can be done in three ways in .NET 5 Vulnerable Patterns for Error Handling 5.1 Page_Error 5.2 Global.asax 5.3 Web.config 6 Best Practices for Error Handling 6.1 Try & Catch (Java/ .NET) 6.2 Releasing resources and good housekeeping 6.3 Centralised exception handling (Struts Example) Error, Exception handling & Logging. Contact author: Eoin Keary An important aspect of secure application development is to prevent information leakage. Error messages give an attacker great insight into the inner workings of an application. The purpose of reviewing the Error Handling code is to assure the application fails safely under all possible error conditions, expected and unexpected. No sensitive information is presented to the user when an error occurs. For example SQL injection is much tougher to successfully pull off without some healthy error messages. It lessens the attack footprint and our attacker would have to resort to use “blind SQL injection” which is more difficult and time consuming. A well-planned error/exception handling strategy is important for three reasons: Good error handling does not give an attacker any information which is a means to an end, attacking the application A proper centralised error strategy is easier to maintain and reduces the chance of any uncaught errors “Bubbling up” to the front end of an application. Information leakage can lead to social engineering exploits. Some development languages provide checked exceptions which mean that the compiler shall complain if an exception for a particular API call is not caught Java and C# are good examples of this. Languages like C++ and C do not provide this safety net. Languages with checked exception handling still are prone to information leakage as not all types of error are checked for. When an exception or error is thrown we also need to log this occurrence. Sometimes this is due to bad development, but it can be the result of an attack or some other service your application relies on failing. All code paths that can cause an exception to be thrown should check for success in order for the exception not to be thrown. To avoid a NullPointerException we should che