HyperLinkDataBindingHandler Sınıf

Tanım

public ref class HyperLinkDataBindingHandler : System::Web::UI::Design::DataBindingHandler

public class HyperLinkDataBindingHandler : System.Web.UI.Design.DataBindingHandler

type HyperLinkDataBindingHandler = class
    inherit DataBindingHandler

Public Class HyperLinkDataBindingHandler
Inherits DataBindingHandler

Devralma

Object

DataBindingHandler

HyperLinkDataBindingHandler

Örnekler

Aşağıdaki kod örneği, sınıfından HyperLinkDataBindingHandler türetilen adlı CustomHyperLinkDataBindingHandlerbir sınıf oluşturur. yöntemini kullanarak sınıfı için tasarım zamanı veri bağlamasını CustomHyperLink DataBindControl çözümler.

// Derive a class from the HyperLinkDataBindingHandler. It will 
// resolve  data binding for the CustomHyperlink at design time.
public class CustomHyperLinkDataBindingHandler : 
    HyperLinkDataBindingHandler
{
    // Override the DataBindControl to set property values in  
    // the DataBindingCollection at design time.
    public override void DataBindControl(IDesignerHost designerHost, 
        Control control)
    {
        DataBindingCollection bindings = 
            ((IDataBindingsAccessor)control).DataBindings;
        DataBinding imageBinding = bindings["ImageUrl"];

           // If Text is empty, supply a default value.
        if (!(imageBinding == null))
        {
            CustomHyperLink hype = (CustomHyperLink)control;
            hype.ImageUrl = "Image URL.";
        }

        // Call the base method to bind the control.
        base.DataBindControl(designerHost, control);
    } // DataBindControl
} // CustomHyperLinkDataBindingHandler

' Derive a class from the HyperLinkDataBindingHandler. It will 
' resolve  data binding for the CustomHyperlink at design time.
Public Class CustomHyperLinkDataBindingHandler
    Inherits HyperLinkDataBindingHandler

    ' Override the DataBindControl to set property values in  
    ' the DataBindingCollection at design time.
    Public Overrides Sub DataBindControl( _
        ByVal designerHost As IDesignerHost, ByVal control As Control)

        Dim bindings As DataBindingCollection = _
            CType(control, IDataBindingsAccessor).DataBindings
        Dim imageBinding As DataBinding = bindings("ImageUrl")

        If Not (imageBinding Is Nothing) Then
            Dim hLink As CustomHyperLink = CType(control, CustomHyperLink)
            hLink.ImageUrl = "Image URL."
        End If

        MyBase.DataBindControl(designerHost, control)
    End Sub
End Class

Oluşturucular

Yöntemler

Şunlara uygulanır