delegates to load user control

Question

If there are 4 user controls Draged & Droped on a Page , then They all are loaded even if we need to show one user control at a time.

I have 1 page ... Fresh Request.aspx
and 4 user controls all are called on this page.
a) ucFreshRequestSeniorOfficers.ascx
b) ucFreshRequestJuniorOfficers.ascx
c) ucChangePassword.ascx
d) ucGenerateLicenses.ascx

When this page is loaded ... then one - by one all the user controls are called ... but i want to show only one means only "ucFreshRequestJuniorOfficers.ascx"

Iftikar Hussain · Answer

Hi You can load user control dynamically depend on your condition. Dont register any user control in your aspx code declare one place holder in your aspx in your code I have considered all user control are inside UserControl folder protected void Page_Load(object sender EventArgs e) { var controlId = 1; if (!String.IsNullOrWhiteSpace(Request.QueryString[ControlId])) { controlId = Convert.ToInt32(Request.QueryString[ControlId]); } LoadUserControl(controlId); } private void LoadUserControl(int tabId) { UserControl userControl = null; switch (tabId) { case 1: userControl = (UserControl)Page.LoadControl(~/UserControls/ucFreshRequestSeniorOfficers.ascx); break; case 2: userControl = (UserControl)Page.LoadControl(~/UserControls/ucFreshRequestJuniorOfficers.ascx); break; case 3: userControl = (UserControl)Page.LoadControl(~/UserControls/ucChangePassword.ascx); break; case 4: userControl = (UserControl)Page.LoadControl(~/UserControls/ucGenerateLicenses.ascx); break; } if (userControl == null) return; userControl.InitializeAsUserControl(Page); UserControlPlaceHolder.Controls.Add(userControl); } Regards Iftikar

Rishi Narula · Answer

Can I use Delegates on the .aspx page to load only the necessary user control ?

Sivaraman Dhamodaran · Answer

Since you placed all 4 user controls in the page Fresh Request.aspx this page will try to make a call to all ascx file. Have one control per page or provide more information on what you are trying to achieve...

Sanjeeb Lenka · Answer

place each user controls within separate separate panel and make the panel visible to false and true according to your requirement.