c# - Write HTML to string

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c# - Write HTML to string

posted Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

c# - Write HTML to string

I have code like this. Is there a way to make it easier to write and maintain? Using C# .NET 3.5.

string header(string title)
{
    StringWriter s = new StringWriter();
    s.WriteLine("{0}","<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">");
    s.WriteLine("{0}", "<html>");
    s.WriteLine("<title>{0}</title>", title);
    s.WriteLine("{0}","<link rel="stylesheet" type="text/css" href="style.css">");
    s.WriteLine("{0}", "</head>");
    s.WriteLine("{0}", "<body>");
    s.WriteLine("{0}", "");
}

I could also just write:

s.WriteLine("{0}", @"blah blah

many
new
lines
blah UHY#$&_#$_*@Y KSDSD<>t\\hh'h'th
hi
done");

It will work, but I need to replace all " with "".

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1 Reply

深蓝 · Answer 1 · 2021-10-23T17:44:39+0000

You're probably better off using an HtmlTextWriter or an XMLWriter than a plain StringWriter. They will take care of escaping for you, as well as making sure the document is well-formed.

This page shows the basics of using the HtmlTextWriter class, the gist of which being:

StringWriter stringWriter = new StringWriter();

using (HtmlTextWriter writer = new HtmlTextWriter(stringWriter))
{
    writer.AddAttribute(HtmlTextWriterAttribute.Class, classValue);
    writer.RenderBeginTag(HtmlTextWriterTag.Div); // Begin #1

    writer.AddAttribute(HtmlTextWriterAttribute.Href, urlValue);
    writer.RenderBeginTag(HtmlTextWriterTag.A); // Begin #2

    writer.AddAttribute(HtmlTextWriterAttribute.Src, imageValue);
    writer.AddAttribute(HtmlTextWriterAttribute.Width, "60");
    writer.AddAttribute(HtmlTextWriterAttribute.Height, "60");
    writer.AddAttribute(HtmlTextWriterAttribute.Alt, "");

    writer.RenderBeginTag(HtmlTextWriterTag.Img); // Begin #3
    writer.RenderEndTag(); // End #3

    writer.Write(word);

    writer.RenderEndTag(); // End #2
    writer.RenderEndTag(); // End #1
}
// Return the result.
return stringWriter.ToString();

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c# - Write HTML to string

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