adding metatag dynamically to master from content page c#

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hello every one,

i am trying to add metatag to master page header from content page. My code goes like this.

XML

string sn = ds.Tables[0].Rows[0]["MetaTitle"].ToString();
Literal lmeta = new Literal();
lmeta.Mode = LiteralMode.PassThrough;
lmeta.Text = string.Format("<meta name=\"Title\" content=\"{0}\"/>", sn);
this.Page.Header.Controls.Add(lmeta);
this.Page.Title = sn;

exactly at this line
this.Page.Header.Controls.Add(lmeta);

i am getting the following error.

XML

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

i googled it but didn't solution for it.

My master page header goes like below.

XML

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="mMaster.master.cs" Inherits="m_mMaster" %>

<!DOCTYPE html>
<html lang="en">
<head id="Header"  runat="server">
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
    <script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
    <link href="//cdnjs.cloudflare.com/ajax/libs/font-awesome/4.1.0/css/font-awesome.min.css"
        rel="stylesheet" type="text/css" />
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" />
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap-theme.min.css" />
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"

even though if i put meta tag binding code in master page i am getting the same error. Please help me.

Posted 29-Dec-14 18:57pm

Navin.Paruchuri

Updated 29-Dec-14 19:48pm

v3

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2 solutions

Solution 1

Hi, there are several ways to do this. Try this one

protected void Page_Load(object sender, EventArgs e)
{
//Add Page Title
//this.Page.Title = "DYNAMIC PAGE TITLE HERE";

//Add Keywords Meta Tag
HtmlMeta keywords = new HtmlMeta();
keywords.HttpEquiv = "keywords";
keywords.Name = "keywords";
keywords.Content = "ENTER YOUR FORMATED CONTENT";
this.Page.Header.Controls.Add(keywords);
//Add Description Meta Tag
HtmlMeta description = new HtmlMeta();
description.HttpEquiv = "description";
description.Name = "description";
description.Content = "ENTER YOUR FORMATED CONTENT";
this.Page.Header.Controls.Add(description);
}

Remember to ACCEPT solution if it works for you

Posted 29-Dec-14 19:34pm

Prince Tegaton

Comments

Navin.Paruchuri 30-Dec-14 1:45am

hello tegaton.. thanks for the reply. I have tried your code but same error. this.Page.Header.Controls.Add(description); is giving me the error "The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)."

[no name] 30-Dec-14 2:00am

Remove all your previous codes and html content and give it a go.

[no name] 30-Dec-14 2:08am

Better still, view this tip and download the DEMO. http://aspsnippets.com/Articles/Dynamically-add-meta-tags-in-ASPNet.aspx

Navin.Paruchuri 2-Jan-15 5:14am

thanks guys... i had to remove all <% %> tags in my header to get rid of this error.

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Shahnawazcode · Accepted Answer · 2014-12-29T21:07:00

Solution 2

Please see the link and try it:
http://stackoverflow.com/questions/1432431/adding-meta-tag-programatically-in-c-sharp[^]

Posted 29-Dec-14 21:07pm

Shahnawazcode

Comments

Navin.Paruchuri 2-Jan-15 5:15am

thanks man... i solved my problem in another way. instead of using place holder i removed all <% %> tags in my master page header.