C# 将查询字符串转换为 .Net 中的键值对
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Convert query string to key-value pair in .Net
提问by Irwin
If I have a string like so:
如果我有这样的字符串：
"Name=Irwin&Home=Caribbean&Preference=Coffee"
is there a method in C# that can convert that to a key-value pair similar to Request.QueryString?
C# 中是否有一种方法可以将其转换为类似于 Request.QueryString 的键值对？
采纳答案by Brandon
You can try using HttpUtility.ParseQueryString.
您可以尝试使用HttpUtility.ParseQueryString.
var nvc = HttpUtility.ParseQueryString(yourString);
回答by PraveenVenu
回答by KeithS
You should be able to split this string based on the ampersands and equals signs, then feed each one into a new KeyValuePair:
您应该能够根据与符号和等号拆分此字符串，然后将每个字符串输入到一个新的 KeyValuePair 中：
Dictionary<string, string> myValues = new Dictionary<string,string>();
string[] elements = myString.Split('=','&');
for(int i=0;i<elements.Length; i+=2)
{
myValues.Add(elements[i], elements[i+1]);
}
This is simplistic and makes a lot of assumptions about the format of your string, but it works for your example.
这很简单，并且对字符串的格式做了很多假设，但它适用于您的示例。
回答by xanatos
And now, for the longest LINQ expression...
现在，对于最长的 LINQ 表达式...
var dict = "Name=Irwin&Home=Caribbean&Preference=Coffee"
.Split('&')
.Select(p => p.Split('='))
.ToDictionary(p => p[0], p => p.Length > 1 ? Uri.UnescapeDataString(p[1]) : null);
But be aware that it will throw if there are multiple keys with the same name.
但请注意，如果有多个同名的键，它会抛出。
If you want to protected yourself from this add:
如果您想保护自己免受此影响，请添加：
.GroupBy(p => p[0]).Select(p => p.First())
just before the .ToDictionary(and after the .Select)
就在之前.ToDictionary（和之后.Select）
this will take the first key=valueof the multiple ones. Change .First()to .Last()to take the last one.
这将取key=value多个中的第一个。更改.First()为.Last()取最后一个。
回答by Abbas
You can also use the ToDictionary() method:
您还可以使用 ToDictionary() 方法：
var input = "Name=Irwin&Home=Caribbean&Preference=Coffee";
var items = input.Split(new[] { '&' });
var dict = items.Select(item => item.Split(new[] {'='})).ToDictionary(pair => pair[0], pair => pair[1]);
