Documenting common Code Snippets in C #

A long time, the common code will be a bit forgotten, or posted here for easy search!

1. Write the information to the file

//writes a string to the text        voidWritetotext (stringmsg) {            Try{msg= DateTime.Now.ToString ("YYYY-MM-DD Hh:mm:ss") +" : "+msg; stringFILEURL = HttpContext.Server.MapPath ("~/unionpaylog.txt"); System.IO.FileStream FS=NewSystem.IO.FileStream (FILEURL, System.IO.FileMode.Append); System.IO.StreamWriter SW=NewSystem.IO.StreamWriter (FS); Sw.                WriteLine (msg); Sw.                Close (); Fs.            Close (); }            Catch(Exception ex) {}}

2, save bitmap Picture object to local, or save picture byte array to local

/// <summary>        ///save picture to local/// </summary>        /// <param name= "BMP" ></param>        /// <returns>return picture name</returns>         Public Static stringSaveimagebybitmap (Bitmap bmp) {if(BMP = =NULL)return ""; stringImgname = Guid.NewGuid (). ToString () +". jpg"; stringLocalimgpath = Localimagefolder () +"\\"+imgname; using(BMP) {using(MemoryStream stream =NewMemoryStream ()) {BMP.                    Save (stream, System.Drawing.Imaging.ImageFormat.Jpeg); byte[] bytes =Stream.                    ToArray (); FileStream FS=NewFileStream (Localimgpath, FileMode.Create); BinaryWriter BW=NewBinaryWriter (FS); Bw.                    Write (bytes); Bw.                    Close (); Fs.                Close (); }            }            returnimgname; }        /// <summary>        ///save picture byte array to local/// </summary>        /// <param name= "bytes" ></param>        /// <returns></returns>         Public Static stringSaveimagebybytes (byte[] bytes) {            stringImgname = Guid.NewGuid (). ToString () +". jpg"; stringLocalimgpath = Localimagefolder () +"\\"+imgname; FileStream FS=NewFileStream (Localimgpath, FileMode.Create); BinaryWriter BW=NewBinaryWriter (FS); Bw.            Write (bytes); Bw.            Close (); Fs.            Close (); returnimgname; }        /// <summary>        ///get local picture path/// </summary>        /// <returns></returns>         Public Static stringLocalimagefolder () {stringDirpath = directory.getcurrentdirectory () +"\\tempImages"; if(!directory.exists (Dirpath))            {directory.createdirectory (Dirpath); }            returnDirpath; }

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3. Network request: Incoming JSON string, network request get return result

/// <summary>        ///POST Request/// </summary>        /// <param name= "url" >Request Server Interface</param>        /// <param name= "paramstring" >parameter String</param>        /// <param name= "Result" >The server returns the result string</param>        /// <returns></returns>         Public Static BOOLHttppostrequest (stringUrlstringParamstring,ref stringresult) {HttpWebRequest Request=NULL; //If you are sending an HTTPS request            if(URL.) StartsWith ("HTTPS", StringComparison.OrdinalIgnoreCase)) {                //servicepointmanager.servercertificatevalidationcallback = new Remotecertificatevalidationcallback ( CheckValidationResult);Request = WebRequest.Create (URL) asHttpWebRequest; //request. ProtocolVersion = Httpversion.version10;            }            Else{Request= WebRequest.Create (URL) asHttpWebRequest; } request. Method="POST"; Request. ContentType="Application/json;charset=utf-8"; //request. Headers.add ("Authorization", User.currentUser.token);Request. Headers.add ("accept-encoding","gzip"); //set proxy useragent and timeouts//request.            useragent = useragent; //request.             Timeout = timeout; //Send post Data            byte[] data =Encoding.UTF8.GetBytes (paramstring); using(Stream stream =request. GetRequestStream ()) {stream. Write (data,0, data.            Length);            } HttpWebResponse response; Try{Response= Request. GetResponse () asHttpWebResponse; }            Catch(Exception ex) {result="Error:"+Ex.                Message; return false; } Stream stream2= Response. GetResponseStream ();//gets the string stream of the responseStreamReader sr =NewStreamReader (STREAM2);//Create a stream to read the streamresult = Sr. ReadToEnd ();//read the JSON string from the beginning to the endSr.            Close (); Stream2.            Close (); return true; }

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Invocation Examples:

stringresult =""; stringParamsstr ="{\ "username\": \ "admin\", \ "password\": \ "123456\"}"; if(Httphelper.httppostrequest ("http://192.168.1.220:5188/user/login/in", Paramsstr,refresult)) {Console.WriteLine ("Success:"+result); }            Else{Console.WriteLine ("Request fail:"+result); }

Parse JSON string as model object, reference Newtonsoft Library

Using Newtonsoft.json;
Using Newtonsoft.Json.Linq;

stringJsonstr ="{\ "code\": \ "0000\", \ "data\": {\ "name\": \ "xxx\", \ "age\": \ "xxx\"}, \ "msg\": \ "xxxxx\"}"; Jobject obj=Jobject.parse (JSONSTR); stringCode = obj["Code"].            ToString (); if(Code. Equals ("0000"))            {                stringDatastr = obj["Data"].                ToString (); Dictionary<string,string> datadict = jsonconvert.deserializeobject<dictionary<string,string>>(DATASTR); //...}

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Documenting common Code Snippets in C #