DotNet Snippets^1.0

Here is an example of having page properties that hold their value in viewstate so that when the same screen posts back but in a different mode, ie. multistep processes, you can still hold the value. Also note we put the value into a local variable as well, because the viewstate will only be set after the postback, so therefore if you tried to access the property in the same request, you won't get a null back.

public partial class WizardSignup : System.Web.UI.Page
	{
public int? PhysicalDockId
		{
			get
			{
				if (ViewState["PhysicalDockId"] == null && _physicalDockId == null)
					return null;
				else
				{
					return _physicalDockId ?? (int)ViewState["PhysicalDockId"];
				}
			}
			set
			{
				ViewState["PhysicalDockId"] = (_physicalDockId = value);
			}
		}
		private int? _physicalDockId = null;
}