UrlEncode不使用系统。网络:

String s = System.Net.WebUtility.UrlEncode(str);
//fix some different between WebUtility.UrlEncode and HttpUtility.UrlEncode
s = Regex.Replace(s, "(%[0-9A-F]{2})", c => c.Value.ToLowerInvariant());

更多的细节: https://www.samnoble.co.uk/2014/05/21/beware-webutility-urlencode-vs-httputility-urlencode/

UrlEncode不使用系统。网络:

String s = System.Net.WebUtility.UrlEncode(str);
//fix some different between WebUtility.UrlEncode and HttpUtility.UrlEncode
s = Regex.Replace(s, "(%[0-9A-F]{2})", c => c.Value.ToLowerInvariant());

更多的细节: https://www.samnoble.co.uk/2014/05/21/beware-webutility-urlencode-vs-httputility-urlencode/

有一个客户端配置文件可用的版本，System.Net.WebUtility类，在客户端配置文件System.dll中。这是MSDN链接:

WebUtility

你可以使用

Uri。EscapeUriString(参见http://msdn.microsoft.com/en-us/library/system.uri.escapeuristring.aspx)

在.Net 4.5+中使用WebUtility

只是为了格式，我把这个作为答案提交。

我找不到任何比较它们的例子，所以:

string testString = "http://test# space 123/text?var=val&another=two";
Console.WriteLine("UrlEncode:         " + System.Web.HttpUtility.UrlEncode(testString));
Console.WriteLine("EscapeUriString:   " + Uri.EscapeUriString(testString));
Console.WriteLine("EscapeDataString:  " + Uri.EscapeDataString(testString));
Console.WriteLine("EscapeDataReplace: " + Uri.EscapeDataString(testString).Replace("%20", "+"));

Console.WriteLine("HtmlEncode:        " + System.Web.HttpUtility.HtmlEncode(testString));
Console.WriteLine("UrlPathEncode:     " + System.Web.HttpUtility.UrlPathEncode(testString));

//.Net 4.0+
Console.WriteLine("WebUtility.HtmlEncode: " + WebUtility.HtmlEncode(testString));
//.Net 4.5+
Console.WriteLine("WebUtility.UrlEncode:  " + WebUtility.UrlEncode(testString));

输出:

UrlEncode:             http%3a%2f%2ftest%23+space+123%2ftext%3fvar%3dval%26another%3dtwo
EscapeUriString:       http://test#%20space%20123/text?var=val&another=two
EscapeDataString:      http%3A%2F%2Ftest%23%20space%20123%2Ftext%3Fvar%3Dval%26another%3Dtwo
EscapeDataReplace:     http%3A%2F%2Ftest%23+space+123%2Ftext%3Fvar%3Dval%26another%3Dtwo

HtmlEncode:            http://test# space 123/text?var=val&another=two
UrlPathEncode:         http://test#%20space%20123/text?var=val&another=two

//.Net 4.0+
WebUtility.HtmlEncode: http://test# space 123/text?var=val&another=two
//.Net 4.5+
WebUtility.UrlEncode:  http%3A%2F%2Ftest%23+space+123%2Ftext%3Fvar%3Dval%26another%3Dtwo

在. net 4.5+中使用WebUtility。UrlEncode

这似乎复制了HttpUtility。UrlEncode (v4.0之前)用于更常见的字符: Uri.EscapeDataString (testString)。替换(“% 20”,“+”)。替换(“”、“”)。替换(“~”,“% 7 e”) 注意:EscapeUriString将保留一个有效的uri字符串，这将导致它使用尽可能多的明文字符。

请参阅比较各种编码的表格的答案: https://stackoverflow.com/a/11236038/555798

换行符 这里列出的所有代码(HttpUtility.HtmlEncode除外)都将“\n\r”转换为%0a%0d或%0a%0d

请随意编辑，并向我的测试字符串中添加新字符，或将它们留在评论中，我会编辑它。

System.Net.WebUtility.HtmlDecode