ViewState In ASP.NET Web Forms | State Management In ASP.NET | ASP.NET WebForms

 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="View_State_Practice_State_Management.WebForm1" %>


<!DOCTYPE html>


<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <style type="text/css">

        .auto-style1 {

            width: 100%;

        }

        .auto-style2 {

            width: 105px;

        }

    </style>


</head>

<body>

    <form id="form1" runat="server">

        <div>

            <table cellpadding="3" cellspacing="3" class="auto-style1">

                <tr>

                    <td class="auto-style2">USERNAME</td>

                    <td>

                        <asp:TextBox ID="UserTextBox" runat="server" Width="205px"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td class="auto-style2">PASSWORD</td>

                    <td>

                        <asp:TextBox ID="PassTextBox" runat="server" Width="205px"></asp:TextBox>

                    </td>

                </tr>

                <tr>

                    <td class="auto-style2">&nbsp;</td>

                    <td>

                        <asp:Button ID="SubmitButton" runat="server" Text="SUBMIT" Height="36px" OnClick="SubmitButton_Click" Width="95px"/>

                        <asp:Button ID="RestoreButton" runat="server" Text="RESTORE" Height="36px" Width="95px" OnClick="RestoreButton_Click"/>

                    </td>

                </tr>

            </table>

        </div>

    </form>

</body>

</html>

Above File is View_State_Practice_State_Management\WebForm1.aspx















using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace View_State_Practice_State_Management
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        string a, b;
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void RestoreButton_Click(object sender, EventArgs e)
        {
            if (ViewState["user"] != null)
            {
                UserTextBox.Text = ViewState["user"].ToString();
            }
            if (ViewState["pass"] != null)
            {
                PassTextBox.Text = ViewState["pass"].ToString();
            }
        }

        protected void SubmitButton_Click(object sender, EventArgs e)
        {
            ViewState["user"] = UserTextBox.Text;
            ViewState["pass"] = PassTextBox.Text;

            UserTextBox.Text = string.Empty;
            PassTextBox.Text = string.Empty;

            Response.Redirect("WebForm2.aspx");
        }
    }
}
Above File is View_State_Practice_State_Management\WebForm1.aspx.cs














<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="View_State_Practice_State_Management.WebForm2" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            Username:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br/>
            Password:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
          
            <br />
            <asp:Button ID="Button1" runat="server" Text="Restore" OnClick="Button1_Click"/>
        </div>
    </form>
</body>
</html>
Above File is View_State_Practice_State_Management\WebForm2.aspx















using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace View_State_Practice_State_Management
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            if (ViewState["user"] != null)
            {
                TextBox1.Text = ViewState["user"].ToString();
            }
            if (ViewState["pass"] != null)
            {
                TextBox2.Text = ViewState["pass"].ToString();
            }
        }
    }
}
Above File is View_State_Practice_State_Management\WebForm2.aspx.cs






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