Click event before on init

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,

I would need that when i click the button the code of the Onclick method
executes first, and then the onInit Method...

Its possible make this?
 
Hi,

Is this a Web or a win app?

You should give more details.

I dont remember an OnInit method in a win app environment, so it should be
a web app.
In this case the OnInit is fired for the page, not for a button control in
the page.

If you are refering to a postback, you can't do nothing as the Page.OnInit
is fired before the control is even restored the status.

Again, what is your problem and we may provide you with a better solution.


cheers,
 
Mi problem is exactly this (in Web)
I have:

- an aspx page
- an ascx control (Exercise1.ascx)
- an ascx control (Exercise2.ascx)

Inside the aspx page i have a placeholder to add a control dinamically.
This placeholder's name is Exercise.

In the aspx page i have this in the OnInit:

override protected void OnInit(EventArgs e)
{
if(Page.Session["Exercise"]!=null)
{
switch(Page.Session["Exercise"].ToString())
{
case "Exercise2.ascx":
Exercise2 Exercise2_=(Exercise2)LoadControl("Exercise2.ascx");
Exercise.Controls.Add(Exercise2_);
break;
}
}
else
{
Exercise1 Exercise1_=(Exercise1)LoadControl("Exercise1.ascx");
Exercise.Controls.Add(Exercise1_);
}
}

In the (for instance) Exercise1.ascx i have this in the onClick method
of a button:

private void ExerciseBtn_Click(object sender, EventArgs e)
{
//add into the session the next exercise to load
Page.Session.Add("Exercise","Exercise2.ascx");
}


If i click in the button inside the usercontrol twice the program works,
but i would like only to need one click.
Thanks.
Josema.
 
Hi Ignacio, Mi problem is exactly this (in Web)
I have:
- an aspx page
- an ascx control (Exercise1.ascx)
- an ascx control (Exercise2.ascx)

Inside the aspx page i have a placeholder to add a control dinamically.
This placeholder's name is Exercise.

In the aspx page i have this in the OnInit:

override protected void OnInit(EventArgs e)
{
if(Page.Session["Exercise"]!=null)
{
switch(Page.Session["Exercise"].ToString())
{
case "Exercise2.ascx":
Exercise2 Exercise2_=(Exercise2)LoadControl("Exercise2.ascx");
Exercise.Controls.Add(Exercise2_);
break;
}
}
else
{
Exercise1 Exercise1_=(Exercise1)LoadControl("Exercise1.ascx");
Exercise.Controls.Add(Exercise1_);
}
}

In the (for instance) Exercise1.ascx i have this in the onClick method
of a button:

private void ExerciseBtn_Click(object sender, EventArgs e)
{
//add into the session the next exercise to load
Page.Session.Add("Exercise","Exercise2.ascx");
}

If i click in the button inside the usercontrol twice the program works,
but i would like only to need one click.
Thanks.
Josema.
 
Hi,

Does the page is posted at the first click?

If so then the problem is in the if(!Postback) else {} part of the

Also remember that the dinamically added controls need to be recreated each
time the page is posted back

Maybe what is happening is that the first time you post the handler is not
kept, ( due a combination of the OnInit code or in the page_load checkig for
PostBack )
Then in the second postback it's kept and that is why you have to click
twice.

If this does not give you enought hints, post both the OnInit & the
Page_Load methods.


cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation



Josema said:
Hi Ignacio, Mi problem is exactly this (in Web)
I have:
- an aspx page
- an ascx control (Exercise1.ascx)
- an ascx control (Exercise2.ascx)

Inside the aspx page i have a placeholder to add a control dinamically.
This placeholder's name is Exercise.

In the aspx page i have this in the OnInit:

override protected void OnInit(EventArgs e)
{
if(Page.Session["Exercise"]!=null)
{
switch(Page.Session["Exercise"].ToString())
{
case "Exercise2.ascx":
Exercise2 Exercise2_=(Exercise2)LoadControl("Exercise2.ascx");
Exercise.Controls.Add(Exercise2_);
break;
}
}
else
{
Exercise1 Exercise1_=(Exercise1)LoadControl("Exercise1.ascx");
Exercise.Controls.Add(Exercise1_);
}
}

In the (for instance) Exercise1.ascx i have this in the onClick method
of a button:

private void ExerciseBtn_Click(object sender, EventArgs e)
{
//add into the session the next exercise to load
Page.Session.Add("Exercise","Exercise2.ascx");
}

If i click in the button inside the usercontrol twice the program works,
but i would like only to need one click.
Thanks.
Josema.
Thanks.
Josema.
Click to expand...
Click to expand...
 
Hi,

I know that the problem its cause the onclick method its after the on
init, due this i have to click twice to see it working...

I would need to know how to add controls dinamically into a page,
mantaining the state of each control during each post-back, and (still
more difficult), each control that i add dinamically has controls that
makes posts-backs...

Could you give me some advices about it?

I will post the code i have here:


***************************************************
*********************ASPX.cs FILE*********************
***************************************************

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace ASPX
{
/// <summary>
/// Summary description for MemoryBattery.
/// </summary>
public class MemoryBattery : System.Web.UI.Page
{
protected System.Web.UI.WebControls.PlaceHolder Exercise;
protected Exercise1 Exercise1_=new Exercise1();
protected Exercise2 Exercise2_=new Exercise2();

private void Page_Load(object sender, System.EventArgs e)
{

}
override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}
private void InitializeComponent()
{
this.Load +=new EventHandler(Page_Load);
if(Page.Session["Exercise"]!=null)
{
switch(Page.Session["Exercise"].ToString())
{
case "Exercise2.ascx":
Exercise2_=(Exercise2)LoadControl("Exercise2.ascx");
Exercise.Controls.Add(Exercise2_);
break;
}
}
else
{
Exercise1_=(Exercise1)LoadControl("Exercise1.ascx");
Exercise.Controls.Add(Exercise1_);
}
}
}
}

*********************************************
**************END OF THE ASPX.cs****************
********************************************

*********************************************
**************Exercise1.ascx ***************
********************************************

using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

public class Exercise1 : System.Web.UI.UserControl
{
protected Button Button1;

override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}
private void InitializeComponent()
{
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}

private void Button1_Click(object sender, EventArgs e)
{
//******this click its my problem, i would like that when
//the user clicks in this button, order to the aspx to
//load another control**********
Page.Session.Add("Exercise", "Exercise2.ascx");
}


}

************************************************
***************End Exercise1.ascx *****************
************************************************


Thanks.
Kind Regards.
Josema.
 
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