LoadOnDemand pass variable

[Atlas]

I am using the application scenario Load On Demand example for the tab strip, and I was wondering how I could pass a variable to the user control. I will have a numeric value (UnitNumber) between 1 and 4, for each number I will need to create a tab. So if the number is three, I need to create 3 tabs. I am going to use the same ascx page, and I want it to know which tab it is: 1, 2, or 3 for example.

I created unit.ascx, and it contains the following:

    private string _unitNumber;

    public string UnitNumber
    {
        get{return _unitNumber; }
        set{ _unitNumber = value; }
    }

the aspx page looks like your example:

        protected void RadMultiPage1_PageViewCreated(object sender, RadMultiPageEventArgs e)
        {
            string userControlName = e.PageView.ID.Replace(" ", "") + ".ascx";

            Control userControl = Page.LoadControl(userControlName);

            userControl.ID = e.PageView.ID + "_userControl";
            e.PageView.Controls.Add(userControl);
        }

so, in the code above, how do I add something like: userControl.UnitNumber = 2

[Greg]

Funnily enough I'm working on something very similar and have found a way around that part of the problem (I'm now at the next hurdle and I'm about to create a thread for that!), it may not be the best way though. I used this article:

http://msdn.microsoft.com/en-us/library/c0az2h86.aspx

And got it working quite easily. If you are still having problems post again and I'll try and stick some code up.

[kachy]

Greg,

Can you please the code for the same, as I want to do the same thing?

Thanks.

[Greg]

Here is the code, I've edited out all the irrelevant stuff so it probablly won't work, but you should be able to see how to do it.

Project.aspx.cs:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Telerik.Web.UI;

public partial class Innovation_Project : System.Web.UI.Page
{
    string questionTable;

    protected void Page_Load(object sender, EventArgs e)
    {
        RadAjaxManager AjaxManager = (RadAjaxManager)this.Master.Master.FindControl("RadAjaxManager1");
        AjaxManager.AjaxSettings.AddAjaxSetting(RadTabStrip1, RadMultiPage1);
        AjaxManager.AjaxSettings.AddAjaxSetting(RadTabStrip1, RadTabStrip1);

        if (!IsPostBack)
        {
            ASP.Question question = new ASP.Question();
            question.LoadControl("./Question.ascx");
            question.ID = "question1";
            question.questionNumber = 1;

            RadMultiPage1.FindControl("RadPageView1").Controls.Add(question);
        }
    }

    protected void RadTabStrip1_TabClick(object sender, RadTabStripEventArgs e)
    {
        ASP.Question question = new ASP.Question();
        question.LoadControl("./Question.ascx");
        question.ID = "question" + e.Tab.Index + 1;
        question.questionNumber = e.Tab.Index + 1;
        question.questionTable = questionTable;

        RadMultiPage1.FindControl("RadPageView" + (e.Tab.Index + 1)).Controls.Add(question);
    }

}

Project.aspx:

<%@ Reference Control="Question.ascx" %>

must contain this line with the name of your user control file.

Question.aspx.cs:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Windows.Forms;

public partial class Innovation_Question : System.Web.UI.UserControl
{
    public int questionNumber;

    protected void Page_Load(object sender, EventArgs e)
    {
        //do stuff with questionNumber
    }

}

Question.aspx:

<%@ Control ClassName="Question" Language="C#" AutoEventWireup="true" CodeFile="Question.ascx.cs" Inherits="Innovation_Question" %>

must contain the ClassName="Question" assignment seen above.


I have two warnings:
1. This is quite possibly not the best way of doing this but it does seem to work.
2. I had major problems trying to access the variables of different user controls so I ended up not using this method. See here for a description of and solution to that problem (I never tried the solution so don't know if it definately works!).

Hope that helps!

[kachy]

Thanks Greg, I will give this a try.