CODEWITHSUNDEEP
c#wpf
user1121956
user1121956

Reputation: 1961

How to parse XAML string to use it in TextBlock

I would like to have string containing Inline markups like 

var str = "foo bar <Bold>dong</Bold>"

and feed TextBlock with it so the text would get formatted like it would be added to Inlines collection. How could I achive that?

Upvotes: 1

Views: 1253

Answers (2)

Clemens
Clemens

Reputation: 128146

You could wrap the text with a <TextBlock> tag and parse the whole thing as XAML:

public TextBlock CreateTextBlock(string inlines)
{
    var xaml = "<TextBlock xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">"
        + inlines + "</TextBlock>";
    return XamlReader.Parse(xaml) as TextBlock;
}

Then use the newly created TextBlock as you like. Put it in some Panel

var str = "foo bar <Bold>dong</Bold>";
grid.Children.Add(CreateTextBlock(str));

or perhaps copy its Inlines to another TextBlock.

Upvotes: 5

Ayyappan Subramanian
Ayyappan Subramanian

Reputation: 5366

You can try the below code.

<TextBlock x:Name="txtBlock"/>

 string regexStr = @"<S>(?<Str>.*?)</S>|<B>(?<Bold>.*?)</B>";
        var str = "<S>foo bar </S><B>dong</B>";
        Regex regx = new Regex(regexStr);
        Match match = regx.Match(str);
        Run inline = null;
        while (match.Success)
        {
            if (!string.IsNullOrEmpty(match.Groups["Str"].Value))
            {
                inline = new Run(match.Groups["Str"].Value);
                txtBlock.Inlines.Add(inline);
            }
            else if (!string.IsNullOrEmpty(match.Groups["Bold"].Value))
            {
                inline = new Run(match.Groups["Bold"].Value);
                inline.FontWeight = FontWeights.Bold;
                txtBlock.Inlines.Add(inline);
            }
            match = match.NextMatch();
        }

Upvotes: -1

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