Skip to main content

Moving Viewstate Bottom Of Page in Asp.net

Most of the time we need to make our website search engine friendly for the better monetizing our site and for moving our site to top of the search result on search engine, for that we need to follow some of the rules provided by search engine and one of them is to move your page viewstate from head to bottom of the page for getting better search engine spidering.

Below is the code for moving hidden fields from page head to page bottom, there is two method for doing this task one for moving all hidden fields and another for moving specific hidden fields to the page bottom just pass the name of hidden fields as the argument of the method.

For moving specific hidden fields (ViewState) to bottom just pass the name of hidden fields.

protected override void Render(HtmlTextWriter writer)
{
    StringWriter responceSW = new StringWriter();
    HtmlTextWriter responceHTW = new HtmlTextWriter(responceSW);
    base.Render(responceHTW);
    string html = responceSW.ToString();
    html = MoveSpecificHiddenFieldsToBottom(html, "__VIEWSTATE", "__EVENTTARGET", "__EVENTARGUMENT");
    writer.Write(html);
}
private string MoveSpecificHiddenFieldsToBottom(string html, params string[] name)
{
    StringBuilder sbPattern = new StringBuilder();
    StringBuilder sbFounded = new StringBuilder();

    foreach (string nm in name)
        sbPattern.Append("<input.*.name=\"" + nm + "\".*/*>|<input.*.name=\"" + nm + "\"*></input>|");
    MatchCollection mc = Regex.Matches(html, sbPattern.ToString().Trim('|'), RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace);

    foreach (Match m in mc)
    {
        sbFounded.AppendLine(m.Value);
        html = html.Replace(m.Value, string.Empty);
    }
    return html.Replace("</form>", sbFounded.ToString() + "</form>");
}


For moving all hidden fields (ViewState) to bottom.

protected override void Render(HtmlTextWriter writer)
{
    StringWriter responceSW = new StringWriter();
    HtmlTextWriter responceHTW = new HtmlTextWriter(responceSW);
    base.Render(responceHTW);
    string html = responceSW.ToString();
    html = MoveAllHiddenFieldsToBottom(html);
    writer.Write(html);
}

private string MoveAllHiddenFieldsToBottom(string html)
{
    string sPattern = "<input name=\"hidden\".*/*>|<input type=\"hidden\".*></input>";
    MatchCollection mc = Regex.Matches(html, sPattern, RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace);
    StringBuilder sbFounded = new StringBuilder();
    foreach (Match m in mc)
    {
        sbFounded.AppendLine(m.Value);
        html = html.Replace(m.Value, string.Empty);
    }
    return html.Replace("</form>", sbFounded.ToString() + "</form>");
}


Popular posts from this blog

regex - check if a string contains only alphabets c#

How to validate that input string contains only alphabets, validating that textbox contains only alphabets (letter), so here is some of the ways for doing such task. char have a property named isLetter which is for checking if character is a letter or not, or you can check by the regular expression  or you can validate your textbox through regular expression validator in asp.net. Following code demonstrating the various ways of implementation.

How to validate dropdownlist in JavaScript

In this article you will see how to put validation in dropdownlist by javascript, suppose first item value of dropdownlist is 0 and text is "-Select-" just like given below and we have to validate that at least one item is selected excluding default i.e "-Select-".

Regular expression for alphanumeric with space in asp.net c#

How to validate that string contains only alphanumeric value with some spacial character and with whitespace and how to validate that user can only input alphanumeric with given special character or space in a textbox (like name fields or remarks fields). In remarks fields we don't want that user can enter anything, user can only able to enter alphanumeric with white space and some spacial character like -,. etc if you allow. Some of regular expression given below for validating alphanumeric value only, alphanumeric with whitspace only and alphanumeric with whitespace and some special characters.

Merging multiple PDFs using iTextSharp in asp.net c#

In this article i will show you how to merge multiple pdfs into one using ITextSharp below is the two approach one is to pass your input files path, output file path (will be created if not exist) and another is pass direct input stream, output stream and it will write the merge files into output stream.