我如何在后面的代码中获得网站另一页的所有控制权

Question

How can I get all control in another page of my site in code behind.
For example I'm in Default.aspx page and I have an ASP Button. I want, when I click on Button get list of all ASP Control in Dashboard.aspx (Like Button , TextBox , DropDownList , etc) without opening Dashboard.aspx
page in Browser.

Note:
1. Getting all Control process must be in Code Behind.
2. I don't want open Dashboard.aspx page in browser.

Answer 1

I use HttpWebRequest to solve this problem.

In Default.aspx page when Clicked on button run this code :

byte[] dataArray = Encoding.UTF8.GetBytes("");

//url = "http://localhost:50036/UI/Dashboard.aspx?Action=FindControl"
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(url);
httpRequest.Method = "POST";
httpRequest.ContentType = "application/x-www-form-urlencoded";

httpRequest.ContentLength = dataArray.Length;
Stream requestStream = httpRequest.GetRequestStream();
requestStream.Write(dataArray, 0, dataArray.Length);
requestStream.Flush();
requestStream.Close();

HttpWebResponse webResponse = (HttpWebResponse)httpRequest.GetResponse();

if (httpRequest.HaveResponse == true)
{
      Stream responseStream = webResponse.GetResponseStream();
      StreamReader responseReader = new System.IO.StreamReader(responseStream, Encoding.UTF8);
      String responseString = responseReader.ReadToEnd();
      /*
          In responseString string i have all control and types seperated by `semicolon`(`;`)
      */
}
else
      Console.Write("no response");

In this code url Variable contain url of Dashboard.aspx

Note:url must contain http:// otherwise doesn't work

In Dashboard.aspx page in Page_Load write this code:

protected void Page_Load(object sender, EventArgs e)
{
    if (Request.QueryString["Action"] != null && Request.QueryString["Action"].ToString() == "FindControl")
    {
         HttpContext.Current.Response.Write(ControlsList(this));
         HttpContext.Current.Response.End();
    }
}

public void ControlsList(Control parent)
    {
        string ans = "";
        foreach (Control c in parent.Controls)
        {
            if (c is TextBox || c is Button || c is DropDownList || c is CheckBox || c is RadioButton || c is CheckBoxList || c is RadioButtonList || c is ImageButton || c is LinkButton)
            {
                if(c.ID != null && c.ID != "")
                ans +=c.ID + "," + ((System.Reflection.MemberInfo)(c.GetType().UnderlyingSystemType)).Name + ";";
            }
            ans += ControlsList(c);
        }
        return ans;
    }

In Page_Load check Action=FindControl then find all control with specified Type with recursive function ControlsList and write it to response to use in Default.aspx

Its completely work for me!