Compilation Error ------------

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C#

This error is giving

Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1502: The best overloaded method match for 'System.Collections.ArrayList.this[int]' has some invalid arguments

Source Error:

<br />
Line 19:             {<br />
Line 20:                 al.Add(item);<br />
Line 21:                 string ss = al[item].ToString();<br />
Line 22:                 Response.Write(ss);<br />
Line 23:             }<br />

My first cs page is

protected void Button1_Click(object sender, EventArgs e)
    {
        ArrayList myAL1 = new ArrayList();
        myAL1.Add(txtId.Text.ToString());
        myAL1.Add(txtName.Text.ToString());
        string items = String.Join(",", ((string[])myAL1.ToArray(typeof(String))));
        string url = "ReceiveValueOfTextBoxSendingInLoop.aspx?items=" + items;
        Response.Redirect(url);
    }

My second cs code is

protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["items"].ToString() != null)
        {

            string[] items = Request.QueryString["items"].ToString().Split(',');
            ArrayList al = new ArrayList();
            foreach (string item in items)
            {
                al.Add(item);
                string ss = al[item].ToString();
                Response.Write(ss);
            }
            //string ss = al[0].ToString();
            //string ss1 = al[1].ToString();
           
          //  Response.Write(ss);
           // Response.Write(ss1);
        }

    }