How to store every page textbox value into cookies.

Hello,

As per RFC 2109 every user agent needs to support

• at least 300 cookies
• at least 4096 bytes per cookie (as measured by the size of the characters that comprise the cookie non-terminal in the syntax description of the Set-Cookie header)
• at least 20 cookies per unique host or domain name

Given this understanding, cookies may not be a good idea to store such information. HTML5 offers an alternative in form of local storage which generally has a recommended storage limit of 5MB per origin.

As far as managing cookies on server side you can use the code similar to one shown below.

// Read search phrases 
if (Request.Cookies["SearchPhrases"] != null) {
    string strVal = Request.Cookies["SearchPhrases"]["textBox1"].Value;
}

// Update textbox1 value
Request.Cookies["SearchPhrases"]["textBox1"].Value = strNewValue

Regards,