Question

I am currently passing a parameter to a SQL string like this –

grid=0&

And I am using a RegEx to get the 0 value like so-

Match match = Regex.Match(input, @"grid=([A-Za-z0-9\-]+)\&$",
            RegexOptions.IgnoreCase);

string grid = match.Groups[1].Value;

which works perfectly.

However as development has progressed it is clear that more parameters will be added to the string like so-

grid=0&hr=3&tb=0

These parameters may come in a different order in the string each time so clearly the RegEx I am currently using wont work. I have looked into it and think Split may be an option however not sure.

What would the best method be and how could I apply it to my current problem?

Answer 1

If you’re parsing query string and looking for an alternative to Regex, there is a specialized class and method for that, it returns collection of parameters:

        string s = "http://www.something.com?grid=0&hr=3&tb=0";
        Uri uri = new Uri(s);
        var result = HttpUtility.ParseQueryString(uri.Query);

You have to include System.Web namespace.
You can access each of the parameters’ values by using it’s key:

        foreach (string key in result.Keys)
        {
            string value = result[key];
            // action...
        }