Custom Error Handling In C#
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Custom Exception Handling In C# With Example
Technologies Web Development Windows Desktop App Development TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Complete Example for Error Handlers Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 This code example includes elements for both error handling in c# best practices page-level and application-level exception handling. Code Example Files The example consists of the following files: Web.config Global.asax Default.aspx ExceptionUtility (to be put in the App_Code folder) GenericErrorPage.aspx HttpErrorPage.aspx Http404ErrorPage.aspx DefaultRedirectErrorPage.aspx Web.config The following example shows the Web.config file. The customErrors section specifies how to handle errors that occur with file types that are mapped to ASP.NET, such as .aspx, .asmx, and .ashx files. (In IIS 6.0 and in IIS 7.0 in classic mode, static content files such as .html and .jpg files are not mapped to ASP.NET.) The settings in the example customErrors section cause any unhandled HTTP 404 (file not found) errors to be directed to the Http404ErrorPage.aspx file. These HTTP 404 errors would occur if a request were made for an .aspx file, .asmx file, and so on and if the requested file did not exist. All other unhandled errors in ASP.NET files are directed to the DefaultRedirectErrorPage.aspx file. If static content files are not handled by ASP.NET, a request for a nonexistent .html or .jpg file does not cause a
Websites Community Support ASP.NET Community Standup ForumsHelp Web Forms:Guidance Videos Samples Forum Books Open Source Older Versions - Getting Started Getting StartedGetting Started with ASP.NET 4.5 Web Forms and Visual Studio 20131. error handling c# mvc Getting Started with Web Forms and Visual Studio2. Create the Project3. Create the c# error handling in constructor Data Access Layer4. UI and Navigation5. Display Data Items and Details6. Shopping Cart7. Checkout and Payment with PayPal8. Membership and c# error handling get line number Administration9. URL Routing10. ASP.NET Error HandlingIntroduction to ASP.NET Web FormsCreating a Basic Web Forms Page in Visual Studio 2013Creating ASP.NET Web Projects in Visual Studio 2013Code Editing ASP.NET Web Forms in Visual Studio https://msdn.microsoft.com/en-us/library/bb397417.aspx 2013ASP.NET Scaffolding in Visual Studio 2013ASP.NET Web Forms (dotnetConf 2014)Using Page Inspector for Visual Studio 2012 in ASP.NET Web FormsVisual Studio 2012 Hands On LabsWhat's New in ASP.NET and Web Development in Visual Studio 2012What's New in Web Forms in ASP.NET 4.5Using Page Inspector in Visual Studio 2012Monitoring and TelemetryRoutingASP.NET 4 - RoutingASP.NET 4 - Defining RoutesASP.NET 4 - Constructing URLs from RoutesASP.NET 4 - Accessing URL https://www.asp.net/hosting/tutorials/displaying-a-custom-error-page-cs Parameters in a PageJavaScript and Client FrameworksASP.NET 4 - Microsoft Ajax OverviewASP.NET AJAX Control Toolkit (maintained by DevExpress)Working with Data Getting Started with ASP.NET 4.5 Web FormsModel Binding and Web Forms in Visual Studio 20131. Retrieving and Displaying Data2. Updating, Deleting, and Creating Data3. Sorting, Paging, and Filtering Data4. Integrating JQuery UI Datepicker5. Using Query String Values to Filter Data6. Adding Business Logic LayerASP.NET 4 Web Forms - Validating User Input in a PageASP.NET 4 Web Forms - State ManagementASP.NET Data Access - Recommended ResourcesServer Data ControlsASP.NET 4 Data-Bound ControlsASP.NET 4 Data Source Controls OverviewASP.NET 4.5 Chart ControlRecommended Resources for ASP.NET Data AccessSecurity, Authentication, and Authorization Getting Started with ASP.NET 4.5 Web FormsASP.NET IdentityCreate a secure ASP.NET Web Forms app with user registration, email confirmation and password reset (C#)Create an ASP.NET Web Forms app with SMS Two-Factor Authentication (C#)OWIN and KatanaPerformanceUsing Asynchronous Methods in ASP.NET 4.5[Build 2014] Deep Dive: Improving Performance in Your ASP.NET App (Levi Broderick)ASP.NET 4 - Web Forms Performance OverviewASP.NET 4 - Web Forms Caching OverviewASP.NET 4 - Caching Web Forms PagesASP.NET 4 - Caching Portions of a Web Forms PageDeploymentGet Started with ASP.NET and Azure App ServicesDeploy a Web App in Azure App ServiceWeb Dep
DOWNLOAD: C# Corner Android App Version 0.5.3 Released C# Corner Annual Conference http://www.c-sharpcorner.com/article/custom-exception-handling-in-C-Sharp/ 2017 Announced C# Corner Contribute An Article A Blog A News A Video A Link An Interview Question Ask a Question TECHNOLOGIES .NET Cloud iOS Oracle String in C# .NET http://net-informations.com/q/faq/custom.html Core Cognitive Services Java Outsourcing Swift ADO.NET Cryptography JavaScript PHP TypeScript AJAX Current Affairs JQuery Power BI Universal Windows Platform Android Databases & DBA JSON Products Visual Studio Angular 2 error handling Design Patterns & Practices JSP Project Management VR and AR AngularJS Dynamics CRM Knockout Python WCF Architecture Entity Framework Learn C# Corner R Web Development ASP.NET Error Zone LINQ Robotics & Hardware Web Services ASP.NET Core Expression Studio Machine Learning Security Windows 10 Azure Games Programming Microsoft Office Servers Windows Controls Big Data GDI+ & Graphics Mobile Development SharePoint Windows handling in c# Forms BizTalk Server Google Development Multithreading SignalR Windows PowerShell Bot Framework HoloLens Node.js Smart Devices WPF C# How do I Office Development Software Testing Xamarin C, C++, MFC HTML 5 OOP/OOD SQL Language XAML Career Advice Internet & Web Open Source SQL Server XML Chapters Internet of Things Operating Systems Request a new Category| View All ANSWERS BLOGS VIDEOS INTERVIEWS BOOKS NEWS CHAPTERS CAREER Jobs CODE IDEAS Scroll To Top Reader Level: Article Custom Exception Handling in C# By Susan Abraham on May 17, 2005 This article discusses the implementation of Custom Exception Handling using the existing features of C# .Net. 218.3k 0 0 facebook twitter linkedIn google Plus Reddit WhatsApp expand Introduction Enhanced Exception Handling is one of key features that is most prominently available in .Net both 2003 version and Whidbey versions of C#. This paper discusses the implementation of Custom Exception Handling using the existing features of C# .Net. The Concept The whole idea of having customized Exception Handling is centered around the fact that there needs to be a generic approach of catching and throwing Exceptions
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. Generally, for large scale projects , one should define custom exceptions. How to create a custom exception ? The following program shows how to create a custom exception. C# Custom Exception Handling using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { try { int i = 0; int j = 0; int k = 0; j = 10; k = 0; i = j / k; } catch (Exception ex) { throw (new MyCustomException("You cannot divide a number by zeo")); } } } public class MyCustomException : System.Exception { public MyCustomException() : base() {} public MyCustomException(string message): base(message) { MessageBox.Show(message); } } } Explanation : public MyCustomException() : base() {} Throw exception with out message public MyCustomException(string message): base(message) { MessageBox.Show(message); } Throw exception with simple message VB.Net Custom Exception Handling Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Try Dim i As Integer = 0 Dim j As Integer = 0 Dim k As Integer = 0 j = 10 k = 0 i = j \ k Catch ex As Exception Throw (New MyCustomException("You cannot divide a number by zeo")) End Try End Sub End Class Public Class MyCustomException Inherits System.Exception Public Sub New() MyBase.New() End Sub Public Sub New(ByVal message As String) MyBase.New(message) MessageBox.Show(messa