Regular expression to get Url without Query string

I am looking for a way to parse URL without queryString using Regular expression.

i have url like "http://abc.com/csd?/aaa/bb开发者_运维问答b"

expected is like "http://abc.com/csd"

Anybody help me on this.

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If you just want everything before the query string:

^[^?]+

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Regex r = new Regex("(^[^?]+)");
Match m = r.Match("http://example.com/csd?/aaa/bbb");
// m.Groups[0].Value is your URL

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You could use Substring and IndexOf

var someString = "http://abc.com/csd?/aaa/bbb";
someString.Substring(0, someString.IndexOf('?') - 1);

while this does not fully comply with the requirements stated in your question, it might be an easier approach - if actual implementation does not need to be RegEx.