Question

I have a simple question in asp.net.
I want to know if it is possible to get data from controls in my user control directly . I want to do it without using Session variable,Viewstate …

EDIT: I now use the method of declaring public variables in the UC.

Here is a part of Page_load from my parent page:

 this.plan_action = (UCPlan)Page.LoadControl("~/Association/UCPlan.ascx");
 PlaceHolder1.Controls.Add(this.plan_action);

 if (this.plan_action.Validate == true)
        {
            CheckBox1.Checked = true;
            //String référence = Session["liste_action"].ToString();

            for (int i = 0; i < this.plan_action.List1.Count; i++)
            {
                Label8.Text += this.plan_action.List1[i].Référence + "/";
                //Label8.Text += "/";
            }


        }

but my variable validate stay to false.

Here is the code where I change the value of the validate variable with it declaration:

    private bool validate;

    public bool Validate
    {
        get { return validate; }
        set { validate = value; }
    }


 protected void Button2_Click(object sender, EventArgs e)
      {


          //myCommand.Connection = myConnection;
          //Session["liste_action"] = this.List;
          this.Validate = true;
          //Response.Redirect("../Risques_folder/AjouterRisque.aspx");


      }

Thank you for your help,

Quentin

Answer 1

UPDATE due to new information

You need to learn about the sequence of events in ASP.NET.

The Load of the page happens a long time before the Click handler of Button2 in your UserControl… so the Validate property is always going to be set to false.

You have two obvious options (as I see it)…

Keep the creation of the UserControl in your Page_Load (or preferably, move it to your Page_Init, as this is normally the most appropriate place for it). Then place your check for the Validate property in a Page_PreRender.

Or, create an Event in your UserControl, Raise that event on the click of Button2, and handle the event in the Page.

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ANOTHER UPDATE

For the 2nd of the two options above, in your UserControl class have the following…

public delegate void ButtonClickedDelegate(object sender, EventArgs e);
public event ButtonClickedDelegate ButtonClicked;

In the Button2_Click method of the UserControl (after setting the this.Validate = true;) call…

ButtonClickedDelegate(sender, e);

In the Page_Init of the Page, put something like…

ctrl1.ButtonClicked += new UCPlan.ButtonClickedDelegate(ctrl1_ButtonClicked);

And then have a new method called something like

void ctrl1_ButtonClicked(object sender, EventArgs e)
{
    if (ctrl1.Validate)
    {
        ...
    }
}

Remember, as you control the delegate you can pass whatever information you want, including an entire class. So instead of calling the Validate property, create a new instance of the class you want, and pass that as a delegate parameter.

You can find more information on delegates and events on MSDN.

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ORIGINAL ANSWER

Unless I’ve missed something, this is a very simple ASP.NET concept…

You can create properties and/or methods.

For example, as a property…

public string MyProperty
{
  get { return "My Property Value"; }
}

Or as a method

public string MyMethod()
{
   return "My Method Value";
}

---

If you’re talking about passing the values between the UserControl and the ASP.NET Page that contains it, then in your Page, you can simply call the property or method. If your control was called (for example) myCtrl, then you can something like…

string prop = myCtrl.MyProperty;
string meth = myCtrl.MyMethod();

---

(On the back of the great comment from AHMED EL-HAROUNY)
If you’re talking about passing the values to the client side page, then you can use the same properties / methods directly in the HTML markup. However, in this case, the properties / method can be declared as protected rather than public

For instance, to display the value…

<%=MyProperty%>

Or

<%=MyMethod()%>

Or if you’re going to use the value in javascript, something like…

var myProp = "<%=MyProperty%>";