C# Array Error Handling
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C# Error Handling Get Line Number
We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. .NET c# error handling framework Framework 4.6 and 4.5 .NET Framework Class Library System System IndexOutOfRangeException Class IndexOutOfRangeException Class IndexOutOfRangeException Class _AppDomain Interface AccessViolationException Class Action Delegate Action(T) Delegate Action(T1, T2, T3,
C# Error Handling Techniques
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, T2, T3, T4, T5, T6, T7, T8, T9, c# error handling class 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 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 Attribute Class AttributeTargets Enumeration AttributeUsageAttribute Class BadImageFormatException Class Base64FormattingOptions Enumeration BitConverter Class Boolean Structure Buffer Class Byte Structure CannotUnloadAppDomainException Class Char Structure CharEnumerator Class CLSC
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Error Handling In C# Best Practices
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Error Handling C# Mvc
redirected in 1 second. Visual Studio 2015 C# C# Programming Guide C# Programming Guide Exceptions and Exception Handling Exceptions and error handling in asp.net c# Exception Handling Exceptions and Exception Handling Inside a C# Program Arrays Classes and Structs Delegates Enumeration Types Events Exceptions and Exception Handling Using Exceptions Exception Handling Creating and Throwing Exceptions Compiler-Generated Exceptions How https://msdn.microsoft.com/en-us/library/system.indexoutofrangeexception(v=vs.110).aspx to: Handle an Exception Using try/catch How to: Execute Cleanup Code Using finally How to: Catch a non-CLS Exception File System and the Registry Generics Indexers Interfaces Interoperability LINQ Query Expressions Main() and Command-Line Arguments Namespaces Nullable Types Programming Concepts (C#) Statements, Expressions, and Operators Strings Types Unsafe Code and Pointers XML Documentation Comments TOC Collapse the table of content Expand the table of content This https://msdn.microsoft.com/en-us/library/ms173160.aspx documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Exceptions and Exception Handling (C# Programming Guide) Visual Studio 2015 Other Versions Visual Studio 2013 Visual Studio 2012 Visual Studio 2010 Visual Studio 2008 Visual Studio 2005 The C# language's exception handling features help you deal with any unexpected or exceptional situations that occur when a program is running. Exception handling uses the try, catch, and finally keywords to try actions that may not succeed, to handle failures when you decide that it is reasonable to do so, and to clean up resources afterward. Exceptions can be generated by the common language runtime (CLR), by the .NET Framework or any third-party libraries, or by application code. Exceptions are created by using the throw keyword.In many cases, an exception may be thrown not by a method that your code has called directly, but by another method further down in the call stack. When this happens, the CLR will unwind the stack, looking for a method with a catch block for the specific exception type, and it will execute the first such catch block that if finds. If it finds no
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow http://stackoverflow.com/questions/20940979/what-is-indexoutofrangeexception-and-how-do-i-fix-it the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of http://csharp.net-tutorials.com/advanced/exceptions/ 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What is IndexOutOfRangeException and how do I fix it? up vote 64 down vote favorite 11 I error handling have some code and when it executes, it throws a IndexOutOfRangeException, saying, Index was outside the bounds of the array. What does this mean, and what can I do about it? c# .net indexoutofrangeexception share|improve this question edited Jul 11 at 14:53 MegaTron 5,80381541 asked Jan 6 '14 at 0:19 Adriano Repetti 38.3k965116 add a comment| 2 Answers 2 active oldest votes up vote 98 down vote accepted What Is It? This c# error handling exception means that you're trying to access a collection item by index, using an invalid index. An index is invalid when it's lower than the collection's lower bound or greater than or equal to the number of elements it contains. When It Is Thrown Given an array declared as: byte[] array = new byte[4]; You can access this array from 0 to 3, values outside this range will cause IndexOutOfRangeException to be thrown. Remember this when you create and access an array. Array Length In C#, usually, arrays are 0-based. It means that first element has index 0 and last element has index Length - 1 (where Length is total number of items in the array) so this code doesn't work: array[array.Length] = 0; Moreover please note that if you have a multidimensional array then you can't use Array.Length for both dimension, you have to use Array.GetLength(): int[,] data = new int[10, 5]; for (int i=0; i < data.GetLength(0); ++i) { for (int j=0; j < data.GetLength(1); ++j) { data[i, j] = 1; } } Upper Bound Is Not Inclusive In the following example we create a raw bidimensional array of Color. Each item represents a pixel, indices are from (0, 0) to (imageWidth - 1, imageHeight - 1). Color[,] pixels = new Color[imageWid
help us prevent some of the most common mistakes. Obviously it can't see every error that might happen, and in those cases, the .NET framework will throw an exception, to tell us that something went wrong. In an earlier chapter, about arrays, I described how we would get an exception if we tried to stuff too many items into an array. Let's bring the example: using System; using System.Collections; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { int[] numbers = new int[2]; numbers[0] = 23; numbers[1] = 32; numbers[2] = 42; foreach(int i in numbers) Console.WriteLine(i); Console.ReadLine(); } } } Okay, try running this example, and you will see what I'm talking about. Do you see what we're doing wrong? We have defined an array of integers with room for 2 items, yet we try to use 3 spaces in it. Obviously, this leads to an error, which you will see if you try to run this example. When run inside Visual C# Express, the IDE gives us some options for the exception, but if you try to execute the program by simply doubleclicking the EXE file, you will get a nasty error. If you know that an error might occur, you should handle it. This is where exceptions are used. Here is a slightly modified version of the code from above: int[] numbers = new int[2]; try { numbers[0] = 23; numbers[1] = 32; numbers[2] = 42; foreach(int i in numbers) Console.WriteLine(i); } catch { Console.WriteLine("Something went wrong!"); } Console.ReadLine(); Let me introduce to you your new best friend when it comes to error handling: the try..catch block. Try running the program now, and see the difference - instead of Visual C# Express/Windows telling us that a serious problem occured, we get to tell our own story. But wouldn't it be nice if we could tell what went wrong? No problem: catch(Exception ex) { Console.WriteLine("An error occured: " + ex.Message); } As you can see, we have added something to the catch statement. We now tell which exception we want caught, in this case the base of all exceptions, the Exception. By doing so, we get some information about the problem which caused the exception, and by outputting the Message property, we get an understandable description of the problem. As I said, Exception is the most general type of exception. The rules of exception handling tells us that we should always use the least general type of exception, and in this case, we actually know the exact type of exception generated by our code. How? Because Visual Studio told us when we didn't handle it. If you're in doubt, the documentation usually describes whi