C# uses WebClient to implement two ways to download file code details-C#.Net Tutorial-php.cn

Home

Backend Development

C#.Net Tutorial

C# uses WebClient to implement two ways to download file code details

黄舟

Mar 07, 2017 am 11:41 AM

This article mainly introduces the two methods of using WebClient to download files in C#. It introduces the two methods in detail. It is of great practical value. Friends in need can refer to it.

Recently sorted out the two ways of downloading files using WebClient and left them for future inquiry.

The first one

string URLAddress = @"http://xiazai.jb51.net";

string receivePath=@"C:\";

client.DownloadFile(URLAddress, receivePath + System.IO.Path.GetFileName(URLAddress));

is OK.

Second type

　Stream str = client.OpenRead(URLAddress);
 StreamReader reader = new StreamReader(str);
 byte[] mbyte = new byte[1000000];
 int allmybyte = (int)mbyte.Length;
 int startmbyte = 0;

 while (allmybyte > 0)
 {

 int m = str.Read(mbyte, startmbyte, allmybyte);
 if (m == 0)
  break;

 startmbyte += m;
 allmybyte -= m;
 }

 reader.Dispose();
 str.Dispose();

 string path = receivePath + System.IO.Path.GetFileName(URLAddress);
 FileStream fstr = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write);
 fstr.Write(mbyte, 0, startmbyte);
 fstr.Flush();
 fstr.Close();

The above is the content of C# using WebClient to implement two ways to download file code details. For more related content, please pay attention to the PHP Chinese website (m.sbmmt.com)!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

From Web to Desktop: The Versatility of C# .NETApr 15, 2025 am 12:07 AM

C#.NETisversatileforbothwebanddesktopdevelopment.1)Forweb,useASP.NETfordynamicapplications.2)Fordesktop,employWindowsFormsorWPFforrichinterfaces.3)UseXamarinforcross-platformdevelopment,enablingcodesharingacrossWindows,macOS,Linux,andmobiledevices.

C# .NET and the Future: Adapting to New TechnologiesApr 14, 2025 am 12:06 AM

C# and .NET adapt to the needs of emerging technologies through continuous updates and optimizations. 1) C# 9.0 and .NET5 introduce record type and performance optimization. 2) .NETCore enhances cloud native and containerized support. 3) ASP.NETCore integrates with modern web technologies. 4) ML.NET supports machine learning and artificial intelligence. 5) Asynchronous programming and best practices improve performance.

Is C# .NET Right for You? Evaluating its ApplicabilityApr 13, 2025 am 12:03 AM

C#.NETissuitableforenterprise-levelapplicationswithintheMicrosoftecosystemduetoitsstrongtyping,richlibraries,androbustperformance.However,itmaynotbeidealforcross-platformdevelopmentorwhenrawspeediscritical,wherelanguageslikeRustorGomightbepreferable.

C# Code within .NET: Exploring the Programming ProcessApr 12, 2025 am 12:02 AM

The programming process of C# in .NET includes the following steps: 1) writing C# code, 2) compiling into an intermediate language (IL), and 3) executing by the .NET runtime (CLR). The advantages of C# in .NET are its modern syntax, powerful type system and tight integration with the .NET framework, suitable for various development scenarios from desktop applications to web services.

C# .NET: Exploring Core Concepts and Programming FundamentalsApr 10, 2025 am 09:32 AM

C# is a modern, object-oriented programming language developed by Microsoft and as part of the .NET framework. 1.C# supports object-oriented programming (OOP), including encapsulation, inheritance and polymorphism. 2. Asynchronous programming in C# is implemented through async and await keywords to improve application responsiveness. 3. Use LINQ to process data collections concisely. 4. Common errors include null reference exceptions and index out-of-range exceptions. Debugging skills include using a debugger and exception handling. 5. Performance optimization includes using StringBuilder and avoiding unnecessary packing and unboxing.

Testing C# .NET Applications: Unit, Integration, and End-to-End TestingApr 09, 2025 am 12:04 AM

Testing strategies for C#.NET applications include unit testing, integration testing, and end-to-end testing. 1. Unit testing ensures that the minimum unit of the code works independently, using the MSTest, NUnit or xUnit framework. 2. Integrated tests verify the functions of multiple units combined, commonly used simulated data and external services. 3. End-to-end testing simulates the user's complete operation process, and Selenium is usually used for automated testing.

Advanced C# .NET Tutorial: Ace Your Next Senior Developer InterviewApr 08, 2025 am 12:06 AM

Interview with C# senior developer requires mastering core knowledge such as asynchronous programming, LINQ, and internal working principles of .NET frameworks. 1. Asynchronous programming simplifies operations through async and await to improve application responsiveness. 2.LINQ operates data in SQL style and pay attention to performance. 3. The CLR of the NET framework manages memory, and garbage collection needs to be used with caution.

C# .NET Interview Questions & Answers: Level Up Your ExpertiseApr 07, 2025 am 12:01 AM

C#.NET interview questions and answers include basic knowledge, core concepts, and advanced usage. 1) Basic knowledge: C# is an object-oriented language developed by Microsoft and is mainly used in the .NET framework. 2) Core concepts: Delegation and events allow dynamic binding methods, and LINQ provides powerful query functions. 3) Advanced usage: Asynchronous programming improves responsiveness, and expression trees are used for dynamic code construction.

See all articles