Public Function IsDataCached() As Boolean

Visual Basic (Usage)	Copy Code
Dim instance As WebValueList Dim value As Boolean   value = instance.IsDataCached()

public bool IsDataCached()

public function IsDataCached(): Boolean; 

public function IsDataCached() : boolean;

public: bool IsDataCached(); 

public:
bool IsDataCached(); 

Return Value

Requirements

The example below shows how to use IsDataCached method in WebValueList. The vlProd utilizes that automated data caching feature which is also implemented by the WebValueList class.

protected void WebGrid1_InitLayout(object sender, ISNet.WebUI.WebGrid.LayoutEventArgs e)
{

    // set valuelist for ShipVia
    WebValueList vlShipVia = WebGrid1.GetTableByName("Orders").Columns.GetNamedItem("ShipVia").ValueList;
    Hashtable htShipVia = new Hashtable();
    htShipVia.Add("1", "Speedy Express");
    htShipVia.Add("2", "United Package");
    htShipVia.Add("3", "Federal Shipping");
    vlShipVia.DataSource = htShipVia;

   // set valuelist for Products
       WebValueList vlProd = WebGrid1.GetTableByName("Order Details").Columns.GetNamedItem("ProductID").ValueList;

   if (!vlProd.IsDataCached())
      {
        daProducts.Fill(dsNorthWind1.Products);
        vlProd.DataSource = dsNorthWind1;
      }
   
    vlProd.DataMember = "Products";
    vlProd.DataTextField = "ProductName";
    vlProd.DataValueField = "ProductID";

}

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference