从Uri [duplicate]获取单个查询参数

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这个问题已经有了答案:

Get url parameters from a string in .NET 11 answers
从。net 11中的字符串获取url参数。

I have a uri string like: http://example.com/file?a=1&b=2&c=string%20param

我有一个uri字符串:http://example.com/file?

Is there an existing function that would convert query parameter string into a dictionary same way as ASP.NET Context.Request does it.

是否有一个函数可以像ASP一样将查询参数字符串转换成字典。净上下文。请求它。

I'm writing a console app and not a web-service so there is no Context.Request to parse the URL for me.

我正在编写一个控制台应用程序，而不是web服务，所以没有上下文。请求为我解析URL。

I know that it's pretty easy to crack the query string myself but I'd rather use a FCL function is if exists.

我知道自己很容易破解查询字符串，但我宁愿使用FCL函数if存在。

10 个解决方案

#1

Use this:

用这个:

string uri = ...;
string queryString = new System.Uri(uri).Query;
var queryDictionary = System.Web.HttpUtility.ParseQueryString(queryString);

This code by Tejs isn't the 'proper' way to get the query string from the URI:

Tejs编写的这段代码不是从URI获取查询字符串的“正确”方法:

string.Join(string.Empty, uri.Split('?').Skip(1));

#2

113

You can use:

您可以使用:

var queryString = url.Substring(url.IndexOf('?')).Split('#')[0]
System.Web.HttpUtility.ParseQueryString(queryString)

MSDN

#3

This should work:

这应该工作:

string url = "http://example.com/file?a=1&b=2&c=string%20param";
string querystring = url.Substring(url.IndexOf('?'));
System.Collections.Specialized.NameValueCollection parameters = 
   System.Web.HttpUtility.ParseQueryString(querystring);

According to MSDN. Not the exact collectiontype you are looking for, but nevertheless useful.

根据MSDN。不是你要找的那种，但是很有用。

Edit: Apparently, if you supply the complete url to ParseQueryString it will add 'http://example.com/file?a' as the first key of the collection. Since that is probably not what you want, I added the substring to get only the relevant part of the url.

编辑:显然，如果您向ParseQueryString提供完整的url，它会添加“http://example.com/file?”a'作为集合的第一个键。因为这可能不是您想要的，所以我添加了substring来获取url的相关部分。

#4

I had to do this for a modern windows app. I used the following:

我必须为一个现代的windows应用做这个。

public static class UriExtensions
{
    private static readonly Regex _regex = new Regex(@"[?&](\w[\w.]*)=([^?&]+)");

    public static IReadOnlyDictionary<string, string> ParseQueryString(this Uri uri)
    {
        var match = _regex.Match(uri.PathAndQuery);
        var paramaters = new Dictionary<string, string>();
        while (match.Success)
        {
            paramaters.Add(match.Groups[1].Value, match.Groups[2].Value);
            match = match.NextMatch();
        }
        return paramaters;
    }
}

#5

Have a look at HttpUtility.ParseQueryString() It'll give you a NameValueCollection instead of a dictionary, but should still do what you need.

parsequerystring()将提供一个NameValueCollection，而不是dictionary，但仍然应该执行所需的操作。

The other option is to use string.Split().

另一个选项是使用string.Split()。

    string url = @"http://example.com/file?a=1&b=2&c=string%20param";
    string[] parts = url.Split(new char[] {'?','&'});
    ///parts[0] now contains http://example.com/file
    ///parts[1] = "a=1"
    ///parts[2] = "b=2"
    ///parts[3] = "c=string%20param"

#6

For isolated projects, where dependencies must be kept to a minimum, I found myself using this implementation:

对于孤立的项目，依赖项必须保持在最低限度，我发现自己使用了这个实现:

var arguments = uri.Query
  .Substring(1) // Remove '?'
  .Split('&')
  .Select(q => q.Split('='))
  .ToDictionary(q => q.FirstOrDefault(), q => q.Skip(1).FirstOrDefault());

Due note though, that I do not handle encoded strings of any kind, as I was using this in a controlled environment, where encoding issues would be a coding error on the server side that should be fixed.

但是，要注意的是，我没有处理任何类型的编码字符串，因为我在一个受控的环境中使用这个，在这个环境中编码问题将是服务器端的编码错误，应该是固定的。

#7

In a single line of code:

用一行代码:

string xyz = Uri.UnescapeDataString(HttpUtility.ParseQueryString(Request.QueryString.ToString()).Get("XYZ"));

#8

Below is the link for your reference to use HttpUtility class to parse querystring values: http://dnohr.dk/aspnet/how-to-get-url-querystring-variables-from-a-string-url-with-csharp

下面是使用HttpUtility类解析querystring值的链接:http://dnohr.dk/aspnet/how- get-url-querystring-变量-from-a-string-url-with-csharp

#9

Microsoft Azure offers a framework that makes it easy to perform this. http://azure.github.io/azure-mobile-services/iOS/v2/Classes/MSTable.html#//api/name/readWithQueryString:completion:

微软Azure提供了一种框架，可以很容易地实现这一点。http://azure.github.io/azure-mobile-services/iOS/v2/Classes/MSTable.html / / api /名称/ readWithQueryString:完成:

#10

-2

You could reference System.Web in your console application and then look for the Utility functions that split the URL parameters.

你可以参考系统。在控制台应用程序中创建Web，然后查找拆分URL参数的实用函数。

#1