Loading usercontrol in placeholder

Question

User-1235801825 posted

Hello All,

  I have a masterpage , an .aspx page and many usercontrols.

In .aspx page I have taken a placeholder where I am loading user controls. My problem is that the first user control is loading fine. I am also having a button in that user control and on click of that button I want to load other user control dynamically through code behind in the placeholder.

But what I am finding is its not firing the button event at all. The control goes to masterpage then .aspx page but never comes to this user controls button click event.

sample of my Codes are :

.aspx

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

Control cnt = LoadControl("../Usercontrols/PersonalInfo.ascx");

UC_placeHolder.Controls.Add(cnt);

lnkPersonal.Text = "Personal info I";

}

}

.ascx

// this button is in the user control. On click of this it should load other user control in placeholder which is in .aspx. But problem is this event never fires.

protected void btnSaveNext_Click(object sender, EventArgs e)

{

Control cnt = LoadControl("../Usercontrols/Experience.ascx");PlaceHolder plcH = (PlaceHolder)Page.FindControl("UC_placeHolder");

plcH.Controls.Add(cnt);

//lnkPersonal.Text = "Personal info A";

}

What must be the problem here ?? Any Idea ?

your help will be highly appreciated.

Please let me know your views .

Thanks.

Regards

Answer 1

User-1235801825 posted

Hello All,

  I found that problem is only when I add the user control dynamically. If I hard code the usercontrol into the page then the event fires...

  Really eating my head...

Regards 

 

Answer 2

User481221548 posted

Hi there

Aviod (!Page.IsPostBack)" and load your control on every page request. Then it works.

Answer 3

User-16411453 posted

You have to add a handler somewhere 

If you make a control dynamically, you have to a add a handler dynamically (VB Example)

Dim txtTextBox

txtTextBox = New TextBox

addHandler txtTextBox.Click, AddressOf txtTextbox_Click

controls.Add(txtTextBox) 

 

Protected Sub btnSaveNext_Click(object sender, EventArgs e)

End Sub 

On a webform with code behind page

Protected Sub btnSaveNext_Click(object sender, EventArgs e) handles btnSaveNext_Click

End Sub