How can I do this regex on C#?

I have a string, that can have some html tags. I'd like to remove some of them (with the data on it), but not all tags.

In fact I'd like to remove <img /> and <div>...</div>.

So for example, if I have the string hello <div>bye bye</div> marco Id like to get hello marco.

How can I开发者_开发问答 do this on C#?

I think you are aware about people's general opinion about parsing HTML with regex. I would recommend you using a HTML parser such as HTML Agility Pack.

Here's a sample:

class Program
{
    static void Main()
    {
        var doc = new HtmlDocument();
        doc.LoadHtml("hello <div>bye bye</div> marco <img src=\"http://example.com\"/> test");

        for (int i = 0; i < doc.DocumentNode.ChildNodes.Count; i++)
        {
            var child = doc.DocumentNode.ChildNodes[i];
            if (child.NodeType == HtmlNodeType.Element && new[] { "div", "img" }.Contains(child.Name, StringComparer.OrdinalIgnoreCase))
            {
                doc.DocumentNode.RemoveChild(child);
            }
        }

        var sb = new StringBuilder();
        using (var writer = new StringWriter(sb))
        {
            doc.Save(writer);
        }
        Console.WriteLine(sb); // prints "hello  marco  test"
     }

}

It is not a good idea to use regex for XML. Depending on the language you should use some XML library.

In this case the regex is pretty simple, though:

        string s = "hello <div>bye bye</div> marco <img />";

        Regex rgx = new Regex("(<div>[^<]*</div>)|(<img */>)");
        s = rgx.Replace(s, "");