HyperLinkDataBindingHandler 类

定义

提供超链接属性的数据绑定处理程序。Provides a data-binding handler for a hyperlink property.

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
继承
HyperLinkDataBindingHandler

示例

下面的代码示例创建一个名为的类 CustomHyperLinkDataBindingHandler ,该类派生自 HyperLinkDataBindingHandler 类。The following code example creates a class, named CustomHyperLinkDataBindingHandler, which derives from the HyperLinkDataBindingHandler class. 它使用方法解析类的设计时数据绑定 CustomHyperLink DataBindControlIt resolves design-time data binding for the CustomHyperLink class using the DataBindControl method.

// 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

构造函数

HyperLinkDataBindingHandler()

初始化 HyperLinkDataBindingHandler 类的实例。Initializes an instance of the HyperLinkDataBindingHandler class.

方法

DataBindControl(IDesignerHost, Control)

为指定控件解析设计时数据绑定。Resolves design-time data-binding for the specified control.

Equals(Object)

确定指定对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(继承自 Object)

适用于