HyperLinkDataBindingHandler 類別

定義

命名空間:

System.Web.UI.Design

組件:

System.Design.dll

提供超連結屬性的資料繫結處理常式。

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

繼承

Object

DataBindingHandler

HyperLinkDataBindingHandler

範例

下列程式碼範例會建立名為 CustomHyperLinkDataBindingHandler 的類別，其衍生自 HyperLinkDataBindingHandler 類別。 它會使用 DataBindControl 方法解析 類別的設計階段資料系結 CustomHyperLink 。

// 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

建構函式

HyperLinkDataBindingHandler()

初始化 HyperLinkDataBindingHandler 類別的執行個體。

方法

DataBindControl(IDesignerHost, Control)	為指定控制項解析設計階段的資料繫結。
Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)