Api MemoryStream C#, wie funktioniert dieser Code?

Question

Ich bin hier mit einer Frage, ich weiß es für Sie einfach, aber ich brauche wirklich zu verstehen, was es tut, Zeile für Zeile ..

using (var stream = new MemoryStream()) 
{ 
    var context = (System.Web.HttpContextBase)Request.Properties["MS_HttpContext"]; 
    context.Request.InputStream.Seek(0, SeekOrigin.Begin); 
    context.Request.InputStream.CopyTo(stream); 
    strContent = Encoding.UTF8.GetString(stream.ToArray()); 
    AppLog.Write("Request content length: " + strContent.Length); 
} 

Answer 1

// create a MemoryStream to act as a buffer for some unspecified data 
using (var stream = new MemoryStream()) 
{ 
    // obtain the http-context (not sure this is a good way to do it) 
    var context = (System.Web.HttpContextBase)Request.Properties["MS_HttpContext"]; 
    // reset the context's input stream to the start 
    context.Request.InputStream.Seek(0, SeekOrigin.Begin); 
    // copy the input stream to the buffer we allocated before 
    context.Request.InputStream.CopyTo(stream); 
    // create an array from the buffer, then use that array to 
    // create a string via the UTF8 encoding 
    strContent = Encoding.UTF8.GetString(stream.ToArray()); 
    // write the number of characters in the string to the log 
    AppLog.Write("Request content length: " + strContent.Length); 
} 

Beachten Sie, dass hier praktisch alles, was getan werden könnte, viel effizienter. Dies ist kein guter Beispielcode.