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How to use exception filters and exception handling in C#

How to use exception filters and exception handling in C# requires specific code examples. Exceptions are errors or unexpected situations that occur during program running. In C#, exceptions are handled by throwing and catching. Exception handling is a key part of ensuring the normal operation of the program. In C#, exception filters and exception handling are two common ways of handling exceptions. Exception filters allow us to filter and handle exceptions before catching them. It uses the when keyword to specify the conditions for the exception filter. Here is an example: try{

Oct 08, 2023 am 09:01 AM

异常处理异常过滤器 C#语言

How to use properties and automatically implemented properties to simplify code in C#

How to use properties and automatically implemented properties in C# to simplify code requires specific code examples. In C# programming, using properties and automatically implemented properties can help us simplify the code and improve the readability and maintainability of the code. Properties allow us to access and change the state of an object by encapsulating fields, and automatically implementing properties further simplifies the property creation process. Properties are a special method used to get and set object data. In C#, properties allow us to access and change fields while performing other

Oct 08, 2023 am 08:53 AM

属性（属性）自动实现属性（自动属性）代码简化（简化代码）

How to use file IO and stream operations for data reading and writing in C# and solutions

How to use file IO and stream operations to read and write data in C# and solutions. During the development process, we often need to read and write files. C# provides a wealth of file IO and stream operations, making data reading and writing more flexible and efficient. This article will explore how to use file IO and stream operations to read and write data in C#, and provide specific code examples. There are many ways to read data, common ones include reading text files, binary files, and network streams. Below we will introduce the specific implementation methods of these reading methods respectively. read

Oct 08, 2023 am 08:45 AM

文件IO：C#中的文件IO操作

How to deal with message queue and asynchronous communication issues in C# development

How to handle message queues and asynchronous communication issues in C# development Introduction: In modern software development, as the size and complexity of applications continue to increase, it is very important to effectively handle message queues and implement asynchronous communication. Some common application scenarios include message passing between distributed systems, background task queue processing, event-driven programming, etc. This article will explore how to deal with message queues and asynchronous communication issues in C# development, and provide specific code examples. 1. Message queue Message queue is an asynchronous communication mechanism that allows messages to be sent by

Oct 08, 2023 am 08:41 AM

消息队列异步通信 C#开发

How to deal with network security and authentication issues and solutions in C# development

How to deal with network security and identity authentication issues and solutions in C# development. With the rapid development of information technology, network security and identity authentication have become issues that must be paid attention to in the C# development process. In this article, we will explore how to deal with network security and authentication issues in C# development, and provide some workarounds and specific code examples. 1. Network security issues Network security refers to the protection of information and systems in computer networks from unauthorized access, use, disclosure, modification, destruction, interruption, unavailability, theft or tampering.

Oct 08, 2023 am 08:36 AM

身份验证 (Identity Verification) 解决方法 (Solutions) 网络安全 (Network

Common data type conversion problems and solutions in C#

Common data type conversion problems and solutions in C# In C#, data type conversion is a common problem. Since C# is a strongly typed language, the types of variables must match when calculating or assigning values. Therefore, when we need to convert one data type to another data type, we may encounter various problems. This article will introduce common data type conversion problems and provide corresponding solutions and specific code examples. String to integer type problem: When we need to convert a string to an integer type (int

Oct 08, 2023 am 08:25 AM

数据类型转换解决方案

How to use delegates and event handlers in C#

How to use delegates and event handlers in C# requires specific code examples. In C#, delegates and event handlers are two very important concepts that can be used to implement event-driven programming models. Delegates provide a mechanism for passing methods as parameters, while event handlers are used to handle methods for specific events. This article will introduce in detail how to use delegates and event handlers in C#, and give specific code examples. First, we need to understand what delegation is. A delegate can be viewed as a reference to a method, which can be used to store specific

Oct 08, 2023 am 08:17 AM

委托 (Delegate) 事件处理程序 (Event Handler) C# 中的事件 (Events in C#)

What is the basic structure of a C# program?

Let us first look at a C# sample program - usingSystem;namespaceDemoApplication{ classHelloWorld{ staticvoidMain(string[]args){ Console.WriteLine("Welcome!"); &am

Sep 27, 2023 pm 04:33 PM

How to pass command line parameters in the main method of C#?

The Main() method is the entry point - staticvoidMain(string[]args) The parameter array args is used to set the parameters - string[]args) If you add two parameters, it will set the following - varargs=newstring[]{"arg1", "arg2"}Here is the demo code - example usingSystem;namespaceDemo{ classHelloWorld{ //

Sep 25, 2023 pm 11:41 PM

C# program for searching directories and listing files

Searching directories and listing files are common tasks in many applications. In C#, we can use the Directory and File classes provided by the System.IO namespace to perform these tasks. In this article, we will explore how to write a C# program to search directories and list files. Method: Using Directory.GetFiles() The easiest way to search a directory and list files in C# is to use the Directory.GetFiles() method. This method returns an array of strings representing the paths to all files in the specified directory that match the specified search pattern. This is how we can list all files in a directory using Directory.GetFiles() method

Sep 24, 2023 pm 05:33 PM

c# add spaces between words starting with capital letters

To put spaces between words starting with a capital letter, try the following example - first, set up a string. varstr="WelcomeToMyWebsite";As you can see above, our string has no spaces before capital letters. To add it, use LINQ like this - str=string.Concat(str.Select(x=>Char.IsUpper(x)?""+x:x.ToString())).TrimStart('') ;The following puts spaces between words starting with a capital letter

Sep 24, 2023 pm 02:29 PM

How to write retry logic in C#?

Whenever an operation fails, retry logic is implemented. Implement retries to only log logic in the full context of the failed operation. It is important to log all connection failures that result in retries so that underlying issues with the application, service, or resource can be identified. Example classProgram{ publicstaticvoidMain(){ HttpClientclient=newHttpClient(); dynamicres=null;&

Sep 24, 2023 pm 12:45 PM

How to create an array with non-default repeating values in C#?

We can use Enumerable.Repeat() to create an array with non-default values. It repeats a collection containing repeated elements in C#. First, set which element you want to repeat how many times. Example 1classProgram{ staticvoidMain(string[]args){ varvalues=Enumerable.Repeat(10,5); foreach(varitem

Sep 23, 2023 pm 10:45 PM

What operators does C# provide to handle null values?

C# has the following three operators to handle null values - The null coalescing operator (??) allows you to get the value of a variable if it is not null, or specify a default value that can be used. It replaces the following expression in C# - stringresultOne=value!=null?value:"default_value"; with the following expression - stringresultTwo=value??"default_value"; Here is an example illustrating this. Example usingSystem;classProgram{ s

Sep 23, 2023 pm 05:57 PM