I have some html string that is coming from telerik radeditor, it may contain images tags with width and height. I want to remove those width and height properties. How can I do this in code using regex or something else in asp.net?
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please show a sample html string and your desired o/p.codeandcloud– codeandcloud2011-04-27 04:44:35 +00:00Commented Apr 27, 2011 at 4:44
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4 Answers
Two Regex replace statements will do the job pretty well:
str = Regex.Replace(str, @"(<img[^>]*?)\s+height\s*=\s*\S+",
"$1", RegexOptions.IgnoreCase);
str = Regex.Replace(str, @"(<img[^>]*?)\s+width\s*=\s*\S+",
"$1", RegexOptions.IgnoreCase);
(This is a C# snippet - not sure if ASP.NET is the same)
Comments
There are a lot of mentions regarding not to use regex when parsing HTML, so you could use e.g. Html Agility Pack for this:
HtmlDocument document = new HtmlDocument();
document.LoadHtml(html);
var images = document.DocumentNode.SelectNodes("//img");
foreach (HtmlNode image in images)
{
if (image.Attributes["width"] != null)
{
image.Attributes["width"].Remove();
}
if (image.Attributes["height"] != null)
{
image.Attributes["height"].Remove();
}
}
this will remove width and height attribute from images in your html.
Comments
Not sure I understand the question, but why not just omit them in the first place instead of trying to remove them?
In your ASPX file....
<img src="images/myimage.jpg">
And for the love of God, don't try to strip them out with Regex.
str = Regex.Replace(str, @"(<img[^>]*?)\s+height\s*=\s*\S+",
"$1", RegexOptions.IgnoreCase);
str = Regex.Replace(str, @"(<img[^>]*?)\s+width\s*=\s*\S+",
"$1", RegexOptions.IgnoreCase);
1 Comment
Edwin de Koning
That is exactly the same answer as the one from ridgerunner, minus the text.