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Cache.Item[String] Property

  • Reference

Definition

Namespace:
System.Web.Caching
Assembly:
System.Web.dll

Gets or sets the cache item at the specified key.

public:
 property System::Object ^ default[System::String ^] { System::Object ^ get(System::String ^ key); void set(System::String ^ key, System::Object ^ value); };
public object this[string key] { get; set; }
member this.Item(string) : obj with get, set
Default Public Property Item(key As String) As Object

Parameters

key
String

A String object that represents the key for the cache item.

Property Value

Object

The specified cache item.

Examples

The following example uses the Item property to retrieve the value of a cached object associated with the Key1 key. It then uses the HttpResponse.Write method to write the value and introductory text and the B HTML element to a Web Forms page.

Response.Write("Value of cache key: <B>" + Server.HtmlEncode(Cache["Key1"] as string) + "</B>");

Response.Write("Value of cache key: <B>" + Server.HtmlEncode(CType(Cache("Key1"),String)) + "</B>")

The following example demonstrates using this property to insert the value of a text box into the cache.

private void cmdAdd_Click(Object objSender, EventArgs objArgs)
{
    if (txtName.Text != "")
    {
        // Add this item to the cache.
        Cache[txtName.Text] = txtValue.Text;
    }
}


Private Sub cmdAdd_Click(objSender As Object, objArgs As EventArgs)
  If txtName.Text <> "" Then
    ' Add this item to the cache.
  Cache(txtName.Text) = txtValue.Text
  End If
End Sub

Remarks

You can use this property to retrieve the value of a specified cache item, or to add an item and a key for it to the cache. Adding a cache item using the Item[] property is equivalent to calling the Cache.Insert method.

Applies to

See also