Example:
<%@ Page Language="C#" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <script runat="server"> public string Value { get { return (string)ViewState["Value"]; } set { ViewState["Value"] = value; } } protected override void LoadViewState(object savedState) { Response.Write("Load View State <br />"); base.LoadViewState(savedState); } protected override void OnLoad(EventArgs e) { base.OnLoad(e); Response.Write("Page Load <br />"); } protected void Save(object sender, EventArgs e) { Response.Write("My Save Method - I didnt add anyting to View state <br />"); } protected override object SaveViewState() { Response.Write("Save View State <br />"); return base.SaveViewState(); } protected void Add(object sender, EventArgs e) { Response.Write(string.Format("My Add Method - I add some value to view state <strong>{0}</strong> <br />", string.IsNullOrEmpty(this.Value) ? "Next time page will load view sate" : string.Empty)); this.Value = DateTime.Now.ToShortTimeString(); } </script> </head> <body> <form id="form1" runat="server"> <div> <div id="ProductList"> <asp:Button runat="server" ID="btnSave" OnClick="Save" Text="Save" /> <asp:Button runat="server" ID="btnAdd" OnClick="Add" Text="Add" /> </div> </div> </form> </body> </html>
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