CODEWITHSUNDEEP
c#.nethtmlwinformsindexof
Crash893
Crash893

Reputation: 11702

best way to find end of body tag in html

I'm writing a program to add some code to html files

I was going to use a series of indexof and loops to find what is essentially ""X (where X is the spot im looking for)

It occurred to me that there might be a more eloquent way of doing this

does anyone have any suggestions.

what it looks like currently

<body onLoad="JavaScript:top.document.title='Abraham L Barbrow'; if (self == parent) document.getElementById('divFrameset').style.display='block';">

what it should look like when im done

<body onLoad="JavaScript:top.document.title='Abraham L Barbrow'; if (self == parent) document.getElementById('divFrameset').style.display='block';">
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
try {
var pageTracker = _gat._getTracker("UA-9xxxxxx-1");
pageTracker._trackPageview();
} catch(err) {}</script>

Upvotes: 2

Views: 4163

Answers (7)

nemath
nemath

Reputation: 31

public string AddImageLink(string emailBody,string imagePath)
{
    try
    {
    HtmlDocument doc = new HtmlDocument();
    doc.LoadHtml(emailBody);

    HtmlNode node = doc.DocumentNode.SelectSingleNode("//body");

    // get body using xpath query ("//body")
    // create the new node ..

    HtmlNodeCollection LinkNode = new HtmlNodeCollection(node);
    //

    HtmlNode linkNode = new HtmlNode(HtmlNodeType.Element,doc,0);
    linkNode.Name = "A";
    linkNode.Attributes.Add("href","www.splash-solutions.co.uk");


    HtmlNode imgNode = new HtmlNode(HtmlNodeType.Element,doc,1);
    imgNode.Name = "img";
    imgNode.Attributes.Add("src",imagePath);

    //appending the linknode with image node
    linkNode.AppendChild(imgNode);

    LinkNode.Append(linkNode);

    //appending LinkNode to the body of the html
    node.AppendChildren(LinkNode);


    StringWriter writer = new StringWriter();
    doc.Save(writer);
    emailBody = writer.ToString();
    return emailBody;
}

Upvotes: 3

Crash893
Crash893

Reputation: 11702

This is what i got

feel free to make suggestions

 private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog OFD = new OpenFileDialog();
            OFD.Multiselect = true;
            OFD.Filter = "HTML Files (*.htm*)|*.HTM*|" +
          "All files (*.*)|*.*";

            if (OFD.ShowDialog() == DialogResult.OK)
            {
                foreach (string s in OFD.FileNames)
                {
                    Console.WriteLine(s);
                    AddAnalytics(s);
                }
                MessageBox.Show("done!");
            }
        }
        private void AddAnalytics(string filename)
        {

            string Htmlcode = "";
            using (StreamReader sr = new StreamReader(filename))
            {
                Htmlcode = sr.ReadToEnd();
            }
            if (!Htmlcode.Contains(textBox1.Text))
            {
                Htmlcode = Htmlcode.Replace("</body>", CreateCode(textBox1.Text) + "</body>");

                using (StreamWriter sw = new StreamWriter(filename))
                {
                    sw.Write(Htmlcode);
                }
            }
        }

        private string CreateCode(string Number)
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine();
            sb.AppendLine("<script type=\"text/javascript\">");
            sb.AppendLine("var gaJsHost = ((\"https:\" == document.location.protocol) ? \"https://ssl.\" : \"http://www.\");");
            sb.AppendLine("document.write(unescape(\"%3Cscript src='\" + gaJsHost + \"google-analytics.com/ga.js' ");
            sb.AppendLine("<//script>");
            sb.AppendLine("<script type=/\"text//javascript/\">");
            sb.AppendLine("try {");
            sb.AppendLine(string.Format("var pageTracker = _gat._getTracker(/\"{0}/\");", Number));///"UA-9909000-1"
            sb.AppendLine("pageTracker._trackPageview();");
            sb.AppendLine("} catch(err) {}<//script>");
            sb.AppendLine();
            return sb.ToString();
        }
    }

Upvotes: 0

Emil Stenstr&#246;m
Emil Stenstr&#246;m

Reputation: 14086

I'm not sure whether the example content you want to add after the tag is the correct one or not, but if it is, I'm seeing two problems:

  1. The Google Analytics code should be added just before the end tag, not the opening tag. That ensures that you don't have to wait for it to load before loading your own code.
  2. If you're adding some other javascript, why not add that in an external file, and execute that one onload instead?

Hope that's of some help :)

Upvotes: 1

markwatson
markwatson

Reputation: 2239

I'm not sure I'm understanding you, but do you mean this?

// Given an HTML document in "htmlDocument", and new content in "newContent"
string newHtmlDocument = htmlDocument.Replace("</body>", newContent+"</body>");

And it's probably obvious I don't know c#... You'd probably want to make the "body" tag case insensitive via regexps.

Upvotes: 5

Joshua
Joshua

Reputation: 8212

If the HTML files are valid XHTML you could always use the XmlDocument class to interpret it. You could then easily look for the body element and append a child element to it. This would place the element right before the closing </body> tag.

Upvotes: 2

BigBlondeViking
BigBlondeViking

Reputation: 3963

You might want to look at using the Html Agility Pack

http://www.codeplex.com/htmlagilitypack

Upvotes: 1

bohdan_trotsenko
bohdan_trotsenko

Reputation: 5357

I would recommend to use HtmlAgilityPack to parse the html into DOM and work with it.

Upvotes: 4

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