字符串替换不工作 [英] String replace not working

问题描述

public static string ChangeUriToHttps(HttpRequest request)
{
    string uri = request.Url.AbsoluteUri;

    if (!IsRequestSecure(request))
        uri.Replace("http", "https");

    return uri;
}

如果我有一个URI这样的发送请求：

If I send in a request that has a uri like this:

http://localhost/AppName/somepage.aspx

它不以https取代HTTP。

it doesn't replace the http with https.

推荐答案

常见的错误。字符串是不可改变的。这意味着原来的对象不能被修改

common mistake. Strings are immutable. This means the original object can't be modified.

 public static string ChangeUriToHttps(HttpRequest request)
 {
      string uri = request.Url.AbsoluteUri;

      if (!IsRequestSecure(request))
          uri = uri.Replace("http", "https");

      return uri;
 }

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