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StateBag.Keys Property

Gets a collection of keys representing the items in the StateBag object.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

public ICollection Keys { get; }
/** @property */
public final ICollection get_Keys ()

public final function get Keys () : ICollection

Not applicable.

Property Value

The collection of keys.

These keys are the names of the control properties. For example, if you created a BGColor property on a Table control that you customized, a BGColor entry is created in this collection representing that property on your Table control.

These keys correspond to the names of the StateItem objects stored in the StateBag collection for the current page or server control.

You can iterate over this collection using the StateBag.GetEnumerator method.

The following code example demonstrates using the Keys property.

private string GetMruList(string selectedValue) {
   StateBag state = ViewState;
   if (state.Count > 0) {
      int upperBound = state.Count;
      string[] keys = new string[upperBound];
      StateItem[] values = new StateItem[upperBound];
      state.Keys.CopyTo(keys, 0);
      state.Values.CopyTo(values, 0);
      StringBuilder options = new StringBuilder();
      for(int i = 0; i < upperBound; i++) {
         options.AppendFormat("<option {0} value={1}>{2}", (selectedValue == keys[i])?"selected":"", keys[i], values[i].Value);
      }
      return options.ToString();
   }
   return "";
}

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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