Asp.net Client State Management - Query String

       For passing variables content between pages ASP.NET gives us several choices. One choice is using Query String property of Request Object

Implementing Query String:

Private void btnSubmit_Click (object sender, System.EventArgs e)

{

Response.Redirect ("Webform2.aspx?Name=" +

this.txtName.Text + "&LastName=" +

this.txtLastName.Text);

}

Our first code part builds a query string for your application and sends contents of your textboxes to second page. Now how to retrieve these values from second page. Put this code to second page 

Page_load:

Private void Page_Load(object sender, System.EventArgs e)

{

this.txtBox1.Text = Request.QueryString ["Name"];

this.txtBox2.Text = Request.QueryString ["LastName"];

}

Request.QueryString is used to retrieve these values

private void Page_Load(object sender, System.EventArgs e)

{

this.txtBox1.Text = Request.QueryString[0];

this.txtBox2.Text = Request.QueryString[1];

}

Advantages of this approach:

• It is very easy. 

Disadvantages of this approach:

•  Query String have a max length, If you have to send a lot information this approach does not work.
•   Query String is visible in your address part of your browser so you should not use it with sensitive information.
•   Query String cannot be used to send & and space characters.