C# 是否与 JavaScript 的 encodeURIComponent() 等效? [英] Does C# have an equivalent to JavaScript's encodeURIComponent()?

问题描述

在 JavaScript 中:

In JavaScript:

encodeURIComponent("©√") == "%C2%A9%E2%88%9A"

是否有 C# 应用程序的等效项?为了转义我使用的 HTML 字符:

Is there an equivalent for C# applications? For escaping HTML characters I used:

txtOut.Text = Regex.Replace(txtIn.Text, @"[u0080-uFFFF]",
    m => @"&#" + ((int)m.Value[0]).ToString() + ";");

但我不确定如何将匹配转换为 JS 使用的正确十六进制格式.例如这段代码:

But I'm not sure how to convert the match to the correct hexadecimal format that JS uses. For example this code:

txtOut.Text = Regex.Replace(txtIn.Text, @"[u0080-uFFFF]",
    m => @"%" + String.Format("{0:x}", ((int)m.Value[0])));

为 "©√" 返回 "%a9%221a" 而不是 "%C2%A9%E2%88%9A".看起来我需要将字符串拆分为字节或其他内容.

Returns "%a9%221a" for "©√" instead of "%C2%A9%E2%88%9A". It looks like I need to split the string up into bytes or something.

这是一个 windows 应用程序，System.Web 中唯一可用的项目是:AspNetHostingPermission、AspNetHostingPermissionAttribute 和 >AspNetHostingPermissionLevel.

This is for a windows app, the only items available in System.Web are: AspNetHostingPermission, AspNetHostingPermissionAttribute, and AspNetHostingPermissionLevel.

推荐答案

Uri.EscapeDataString 或 HttpUtility.UrlEncode 是转义字符串的正确方法一个网址.

Uri.EscapeDataString or HttpUtility.UrlEncode is the correct way to escape a string meant to be part of a URL.

以字符串"Stack Overflow"为例:

• HttpUtility.UrlEncode("Stack Overflow") --> "Stack+Overflow"

Uri.EscapeUriString("Stack Overflow") --> "Stack%20Overflow"

Uri.EscapeDataString("Stack + Overflow") --> 也将 "+" 编码为 "%2b" ---->Stack%20%2B%20%20Overflow

Uri.EscapeDataString("Stack + Overflow") --> Also encodes "+" to "%2b" ---->Stack%20%2B%20%20Overflow

当用作 URL 的实际部分时，只有最后一个是正确的(而不是查询字符串参数之一的值)

Only the last is correct when used as an actual part of the URL (as opposed to the value of one of the query string parameters)

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