DependencyObject.GetValue(DependencyProperty) 方法

定义

命名空间:

System.Workflow.ComponentModel

程序集:

System.Workflow.ComponentModel.dll

提供对指定的 DependencyProperty 的值的访问。

public:
 System::Object ^ GetValue(System::Workflow::ComponentModel::DependencyProperty ^ dependencyProperty);

public object GetValue (System.Workflow.ComponentModel.DependencyProperty dependencyProperty);

member this.GetValue : System.Workflow.ComponentModel.DependencyProperty -> obj

Public Function GetValue (dependencyProperty As DependencyProperty) As Object

参数

dependencyProperty

DependencyProperty

DependencyProperty

返回

Object

表示指定的 DependencyProperty 的值的对象。

示例

下面的代码演示如何使用 GetValue 以返回由 get 和 set 的上下文中的命名依赖项属性表示的值。 此代码示例是“发送电子邮件 SDK”示例的一部分，来自 SendMailActivity.cs 文件。 有关详细信息，请参阅 “发送电子邮件活动示例”。

public string To
{
    get
    {
        return ((string)(base.GetValue(SendEmailActivity.ToProperty)));
    }
    set
    {
        base.SetValue(SendEmailActivity.ToProperty, value);
    }
}

[DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)]
[BrowsableAttribute(true)]
[DescriptionAttribute("The Subject property is used to specify the subject of the Email message.")]
[CategoryAttribute(MessagePropertiesCategory)]
public string Subject
{
    get
    {
        return ((string)(base.GetValue(SendEmailActivity.SubjectProperty)));
    }
    set
    {
        base.SetValue(SendEmailActivity.SubjectProperty, value);
    }
}

[DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)]
[BrowsableAttribute(true)]
[DescriptionAttribute("The From property is used to specify the From (Sender's) address for the email mesage.")]
[CategoryAttribute(MessagePropertiesCategory)]
public string From
{
    get
    {
        return ((string)(base.GetValue(SendEmailActivity.FromProperty)));
    }
    set
    {
        base.SetValue(SendEmailActivity.FromProperty, value);
    }
}

<DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)> _
<BrowsableAttribute(True)> _
<DescriptionAttribute("The To property is used to specify the receipient's email address.")> _
<CategoryAttribute(MessagePropertiesCategory)> _
Public Property EmailTo() As String
    Get
        Return CType(MyBase.GetValue(SendEmailActivity.ToProperty), String)
    End Get
    Set(ByVal value As String)
        MyBase.SetValue(SendEmailActivity.ToProperty, value)
    End Set
End Property

<DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)> _
<BrowsableAttribute(True)> _
<DescriptionAttribute("The Subject property is used to specify the subject of the Email message.")> _
<CategoryAttribute(MessagePropertiesCategory)> _
Public Property Subject() As String
    Get
        Return CType(MyBase.GetValue(SendEmailActivity.SubjectProperty), String)
    End Get
    Set(ByVal value As String)
        MyBase.SetValue(SendEmailActivity.SubjectProperty, value)
    End Set
End Property


<DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)> _
<BrowsableAttribute(True)> _
<DescriptionAttribute("The From property is used to specify the From (Sender's) address for the email mesage.")> _
<CategoryAttribute(MessagePropertiesCategory)> _
Public Property FromEmail() As String
    Get
        Return CType(MyBase.GetValue(SendEmailActivity.FromEmailProperty), String)
    End Get
    Set(ByVal value As String)
        MyBase.SetValue(SendEmailActivity.FromEmailProperty, value)
    End Set
End Property

注解

此成员通常在属性获取中用于提供命名依赖属性的值。