Dynamically Add User Controls

This article teaches you how to dynamically Add User Controls.
 
To enable the user control to dynamically add ASP. NET pages, first write an interface IGetUCable, which has a function that returns the UserControl object type.
View Code
Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;

/// <Summary>
/// Summary description for IGetUCable
/// </Summary>
Namespace Insus. NET
{
Public interface IGetUCable
{
UserControl GetUC ();
}
}
 

With the interface, you need to create the user control Calculator. ascx:
View Code
<% @ Control Language = "C #" AutoEventWireup = "true" CodeFile = "Calculator. ascx. cs" Inherits = "Calculator" %>
Number A: <asp: TextBox ID = "TextBox1" runat = "server"> </asp: TextBox> <br/>
+ <Br/>
Number B: <asp: TextBox ID = "TextBox2" runat = "server"> </asp: TextBox> <br/>
<Asp: Button ID = "ButtonEqual" runat = "server" Text = "="
OnClick = "ButtonEqual_Click1"/>
<Br/>
Result: <asp: Label ID = "LabelResult" runat = "server" Text = ""> </asp: Label>

 
Calculator. ascx. cs, cs implementation interface:
View Code
Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Web;
Using System. Web. UI;
Using System. Web. UI. WebControls;
Using Insus. NET;

Public partial class Calculator: System. Web. UI. UserControl, IGetUCable
{
Protected void Page_Load (object sender, EventArgs e)
{

}

Protected void ButtonEqual_Click1 (object sender, EventArgs e)
{
Decimal a = decimal. Parse (this. TextBox1.Text. Trim ());
Decimal B = decimal. Parse (this. TextBox2.Text. Trim ());

This. LabelResult. Text = (a + B). ToString ();
}

Public UserControl GetUC ()
{
Return this;
}
}

 
Finally, write in the Page_load event of the aspx that needs to load the user control:
View Code
Protected void Page_Load (object sender, EventArgs e)
{
IGetUCable uc1 = (IGetUCable) LoadControl ("~ /Calculator. ascx ");
This. form1.Controls. Add (uc1.GetUC ());
}

 
Running effect after the user control is loaded:

 


From Insus. NET