C#CS发送HTTP GET请求
try { WebRequest req = WebRequest.Create("http://127.0.0.1/test/loginsso.aspx?username=admin&password=admin"); req.Method = "POST"; //指定提交的Method,可以为POST和GET,一定要大写 //byte[] postData = System.Text.Encoding.GetEncoding("gbk").GetBytes("?username=admin&password=admin");//Post的数据 //req.ContentLength = postData.Length; Stream postStream = req.GetRequestStream(); //postStream.Write(postData, 0, postData.Length); postStream.Close(); WebResponse res = req.GetResponse(); System.Text.Encoding resEncoding = System.Text.Encoding.GetEncoding("utf-8");//接收的编码 StreamReader reader = new StreamReader(res.GetResponseStream(), resEncoding); string html = reader.ReadToEnd(); //接收的Html MessageBox.Show("=========" + html); reader.Close(); res.Close(); } catch (Exception ex) { MessageBox.Show("error"); }
.NET接收GET发送请求
Response.ContentEncoding = Encoding.GetEncoding("UTF-8"); string username = Request["username"]; string password = Request["password"]; if (username != "" && username == "admin" && password != "" && password == "admin") { Response.Write("success"); } else { Response.Write("error" + Request.Url.Host); // Response.Redirect("http://www.g.cn"); }
.NET接收后请求
System.Text.Encoding resEncoding = System.Text.Encoding.GetEncoding("utf-8");//接收的编码 StreamReader reader = new StreamReader(Request.InputStream, resEncoding); string msg = reader.ReadToEnd(); reader.Close();
C#CS发送图片附件
C#代码
如果 (!textBox_fileName.Text.Trim()。等于(“” )) { 字符串 的loadFile = textBox_fileName.Text.Trim(); 字符串 文件名= loadFile.Substring(loadFile.LastIndexOf(“\\”)+1,loadFile.Length - 1 - loadFile.LastIndexOf(“ \\”)); 字符串 urlStr = @ “http://127.0.0.1/test/UploadFile.aspx?name=” +文件名; UploadFileBinary(的loadFile,urlStr); } 其他 { 字符串 alStr = “您还没有选择文件” ; MessageBox.Show(alStr, “ 系统提示” ,MessageBoxButtons.OK,MessageBoxIcon.Exclamation,MessageBoxDefaultButton.Button1); }
C#代码
公共无效 UploadFileBinary(字符串 LOCALFILE, 字符串 的uploadURL) { 尝试 { RDR的FileStream = 新 的FileStream(LOCALFILE,FileMode.Open); 字节[] = INDATA 新字节[4096]; INT totbytes = 0; MemoryStream的POSTDATA = 新 的MemoryStream(); INT 读取动作= rdr.Read(INDATA,0,inData.Length); 而 (读取动作> 0) { postData.Write(INDATA,0,读取动作); 读取动作= rdr.Read(INDATA,0,inData.Length); totbytes + =读取动作; } rdr.Close(); postData.Position = 0; HttpWebRequest的REQ =(HttpWebRequest的)WebRequest.Create(的uploadURL); req.Method = “POST” ; req.ContentLength =(长)postData.Length; 使用 (流S = req.GetRequestStream()) { s.Write(postData.ToArray(),0,(INT )postData.Length); postData.Close(); } WebResponse类RESP = req.GetResponse(); System.Text.Encoding resEncoding = System.Text.Encoding.GetEncoding(“UTF-8”); //接收的编码 StreamReader的读者= 新 的StreamReader(resp.GetResponseStream(),resEncoding); 字符串 味精= reader.ReadToEnd(); reader.Close(); resp.Close(); 如果 (MSG!= 空 && msg.Equals( “ 成功” )) { MessageBox.Show( “ 图片上传成功” ,“提示” ); } } 赶上 (异常前) { //字符串exContent; // exContent = ex.ToString(); MessageBox.Show( “ 上传失败网络出现异常或者图片文件已经存在!” ,“提示” ); } }
.NET接收图片附件文件
C#代码
Response.ContentEncoding = Encoding.GetEncoding(“UTF-8” ); //在此处放置用户代码以初始化页面 字节[]海图= 零; 串ls_name; 如果 (Request.ServerVariables [ “REQUEST_METHOD” ]的ToString()。ToUpper的()== “POST” ) { 海图= Request.BinaryRead(Request.ContentLength); //获取文件名称 ls_name =的Request.QueryString [ “名” ]; //字符串picName = DateTime.Now.Ticks.ToString()+符“.gif”; //字符串picName = DateTime.Now.Ticks.ToString()+“.JPG”; STM的FileStream = 新 的FileStream(使用Server.Mappath(一个“UploadFile /” + ls_name),System.IO.FileMode.CreateNew); stm.Write(海图,0,(INT )theData.Length); stm.Close(); 的Response.Write( “ 成功” ); } 其他 { 的Response.Write( “ 错误” ); }

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.

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

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# 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 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.

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 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.

C#.NET is a popular choice for building microservices because of its strong ecosystem and rich support. 1) Create RESTfulAPI using ASP.NETCore to process order creation and query. 2) Use gRPC to achieve efficient communication between microservices, define and implement order services. 3) Simplify deployment and management through Docker containerized microservices.


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