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Enable ReadOnly Mode for your WebForms!

, 24 Feb 2004
This article will show you, how to implement a readonly mode for webforms.
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 Trivadis.Spieler.ReadOnly
{
	/// <summary>
	/// Summary description for ReadOnlyDialog.
	/// </summary>
	public class ReadOnlyDialog : BasePage
	{
		protected System.Web.UI.WebControls.DropDownList ddlSex;
		protected System.Web.UI.WebControls.TextBox txtLastname;
		protected System.Web.UI.WebControls.TextBox txtFirstname;
		protected System.Web.UI.WebControls.Label lblCity;
		protected System.Web.UI.WebControls.RadioButtonList optCity;
		protected System.Web.UI.WebControls.Label lblFirstname;
		protected System.Web.UI.WebControls.Label lblLastname;
		protected System.Web.UI.WebControls.Label lblSex;
		protected System.Web.UI.WebControls.Label lblSwiss;
		protected System.Web.UI.WebControls.Label lblFirstnamed;
		protected System.Web.UI.WebControls.Label lblHobby;
		protected System.Web.UI.WebControls.ListBox lstHobbies;
		protected System.Web.UI.WebControls.HyperLink hypGridLayout;
		protected System.Web.UI.WebControls.Button btnSave;
		protected System.Web.UI.WebControls.LinkButton lnkReadOnly;
		protected System.Web.UI.WebControls.LinkButton lnkBack;
		protected System.Web.UI.WebControls.CheckBox chkSwiss;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!this.IsPostBack)
			{
				lnkBack.Attributes.Add("onclick","javascript:history.back(-1);");
				btnSave.Attributes.Add("onclick","javascript:alert('Not implemented now.');");
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.lnkReadOnly.Click += new System.EventHandler(this.lnkReadOnly_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void lnkReadOnly_Click(object sender, System.EventArgs e)
		{
			base.SetReadOnly(this.Controls);
		}

	}
}

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About the Author

Patrick Spieler
Web Developer
Switzerland Switzerland
Consultant for Trivadis AG in Switzerland.
Interested in .NET, Architectures, Patterns and Web 2.0.
Blog and articles at http://sharpcuts.blogspot.com

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Web02 | 2.8.140926.1 | Last Updated 25 Feb 2004
Article Copyright 2004 by Patrick Spieler
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