Question

im sending a value from one page in aspx to another page as shown below.

window.location=”test1.aspx?id=1″

how to access this value in codebehind or global.asax?

Answer 1

You could retrieve the id parameter from the Request object in your code behind:

protected void Page_Load(object sender, EventArgs e)
{
    string id = Request["id"];
    // do something with the id
}

Also you will have to fix your javascript because the url you are assigning is invalid. You have an extra + character that should be removed:

window.location.href = 'test1.aspx?id=1';