将Umbraco宏字符串转换为KeyValuePair

Question

I have a string that looks like this:

<?UMBRACO_MACRO redirectto="/sagen.aspx" loginpage="/Login.aspx" macroAlias="BrowserValidation" />

I want to get a list of KeyValuePair<string, string> where the key is the first part and value is the second part. An example would be:

• Key: redirectto Value: /sagen.aspx
• Key: loginpage Value: /Login.aspx
• Key: macroAlias Value: BrowserValidation

Im thinking of using regular expressions but to be honest I don't where to start. I know I can use \\"(.*?)\\" to get the values, but I don't know how to get the keys.

Answer 1

... Try this:

\s(?<key>.*?)\=\"(?<value>.*?)\"

Basically, this will give you 2 named captures:

1. key - This has to begin with whitespace and will be any number of characters until the first =" is encountered
2. value - This will be any number of characters until the next " is encountered

And your output would be:

key: redirectto  ||  value: /sagen.aspx 
key: loginpage  ||  value: /Login.aspx
key: macroAlias  ||  value: BrowserValidation

Hope this does the trick!!

Answer 2

You can try the following regex:

(?<=\s)([^=]+)="([^"]+)"

Here is the code in C#:

var input = @"<?UMBRACO_MACRO redirectto=""/sagen.aspx"" loginpage=""/Login.aspx"" macroAlias=""BrowserValidation"" />";
var matches = Regex.Matches(input, @"(?<=\s)([^=]+)=""([^""]+)""");
foreach (Match match in matches) {
    Console.Write(match.Groups[1].Value);
    Console.Write(" : ");
    Console.WriteLine(match.Groups[2].Value);
}

and here is a more compact version of the previous code which automatically maps attributes name and value pair to a dictionary:

var input = @"<?UMBRACO_MACRO redirectto=""/sagen.aspx"" loginpage=""/Login.aspx"" macroAlias=""BrowserValidation"" />";
var matches = Regex.Matches(input, @"(?<=\s)([^=]+)=""([^""]+)""");
var dictionary = matches.Cast<Match>()
    .Select( m => new {Key = m.Groups[1].Value, Value = m.Groups[2].Value } )
    .ToDictionary(pair => pair.Key, pair => pair.Value);
Console.WriteLine(dictionary);

Regex101 Demo

Answer 3

How about:

static void Main()
{
    string stringToSearch = @"<?UMBRACO_MACRO redirectto=""/sagen.aspx"" loginpage=""/Login.aspx"" macroAlias=""BrowserValidation"" />";
    string pattern = @"\s(\S+)=""(.+?)""";
    var matches = Regex.Matches( stringToSearch, pattern );
    foreach( Match match in matches )
    {
        Console.WriteLine( "Key: " + match.Groups[1].ToString() + ". Value: " + match.Groups[2].ToString() );
    }
}

Output:

Key: redirectto. Value: /sagen.aspx

Key: loginpage. Value: /Login.aspx

Key: macroAlias. Value: BrowserValidation

where:

• \\s is whitespace
• \\S is non-whitespace (assumes no whitespace in key)
• + is 1 or more.
• .+? means match lazily rather than greedily.
• () means group and are refered to later when iterating groups.