SimpleControl extendsing System.Web.UI.WebControls.WebControl : WebControl « User Control and Master Page « ASP.Net

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ASP.Net » User Control and Master Page » WebControl 
SimpleControl extendsing System.Web.UI.WebControls.WebControl

<%@ Page language="C#" %>
<%@ Register TagPrefix="Control" Namespace="Control" Assembly="Control" %>
<script language="C#" runat="server">
void Page_Load(object sender, EventArgs e)
{
  if (!IsPostBack)
  {
    Random rand = new Random();
    SimpleControl1.Text = rand.Next(1,100).ToString();
  }
}
</script>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<html>
  <body>
    <form id="Form1" method="post" runat="server">
      <Control:SimpleControl id="SimpleControl1" runat="server" />
      <asp:linkbutton text="PostBack test" runat="server" />
      <p>
      Values are not maintained across postbacks. <a href="Control.aspx">Re-load</a>
      </p>
    </form>
  </body>
</html>

File: Control.cs


using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace Control
{
  [DefaultProperty("Text"), ToolboxData("<{0}:Control runat=server></{0}:Control>")]
  public class SimpleControl : System.Web.UI.WebControls.WebControl
  {
    private string _text;
  
    [Bindable(true)
      Category("Appearance")
      DefaultValue("")] 
    public string Text 
    {
      get
      {
        return _text;
      }

      set
      {
        _text = value;
      }
    }

    protected override void Render(HtmlTextWriter output)
    {
      output.Write(Text);
    }
  }
}

 
Related examples in the same category
1. SimpleControl extendsing System.Web.UI.WebControls.WebControl (C#)
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3. User control based on System.Web.UI.WebControls.Label (VB)
4. Bindable user control (C#)
5. Bindable user control (VB)
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