HttpWebRequest调用WebRequest.Create报Invalid URI格式错误，求协助

Hey there! That error is popping up because the string "REPLACE_ME" you're passing to WebRequest.Create() isn't a valid Uniform Resource Identifier (URI) — the system has no idea how to parse it into a usable address. Let's break down how to fix this:

Common Fixes & Examples #

• Replace with a fully qualified, valid URI
  You need to provide a complete URI that includes the protocol (like http:// or https://), domain, and any path/query parameters your request needs. For example:

  var request = (HttpWebRequest)WebRequest.Create("https://example.com/api/endpoint");
  

  Without the protocol prefix, the .NET runtime can't distinguish between a web address, file path, or other type of resource.

• Validate URI format before using it
  If you're pulling the URI from a variable or user input, use Uri.TryCreate() to check validity first and avoid exceptions:

  string targetUri = "your-actual-uri-here";
  if (Uri.TryCreate(targetUri, UriKind.Absolute, out Uri validUri))
  {
      var request = (HttpWebRequest)WebRequest.Create(validUri);
      // Proceed with your request logic
  }
  else
  {
      // Handle invalid URI case (show error, log, etc.)
      Console.WriteLine("Invalid URI format. Please check the address.");
  }
  

• Escape special characters if needed
  If your URI includes spaces, ampersands, or other special characters, use Uri.EscapeUriString() to encode them properly:

  string rawUri = "https://example.com/api/data?param=hello world";
  string encodedUri = Uri.EscapeUriString(rawUri);
  var request = (HttpWebRequest)WebRequest.Create(encodedUri);
  

内容的提问来源于stack exchange，提问作者user1250264