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Hidden Fields in ASP.NET

By xrmlabs webmaster on 2/18/2013

To preserve the  data during the page post back and page load  hidden fields are used . In ASP.NET it is used by view state . Hidden fields are input fields and  not visible to the user . You can add hidden fields on your page. You can also store the data in these fields but the data is stored in its value property . The information which is stored in the hidden fields can be rendered for a single page . Using the hidden fields the page should be submitted to the server .  

 An example to use the hidden field :

 Default.aspx

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">   
     <asp:HiddenField ID="Countinghiddenfield" runat="server" />  
    <table>
    <tr>
    <td>
     <asp:Label ID="lbltext" runat="server" Text="Label">asp:Label>
    td>
    tr>
    <td>
    <asp:Button ID="Submitbutton" runat="server" Text="Submit" />   
    td>    
    table>
asp:Content>

In the code behind file

 Default.aspx.cs

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
  
namespace Clientstatehidden
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            int clicks;
            int.TryParse(Countinghiddenfield.Value, out clicks);
            clicks++;
            Countinghiddenfield.Value = clicks.ToString();
          lbltext.Text = "Count of Submit Button " + Countinghiddenfield.Value;
        }
    }
  
}

  The output screen shot of the above  program
 
                  

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