Stroke.GetPropertyData(Guid) 方法

  • 参考

定义

命名空间:
System.Windows.Ink
程序集:
PresentationCore.dll

检索指定 GUID 的属性数据。

public:
 System::Object ^ GetPropertyData(Guid propertyDataId);
public object GetPropertyData (Guid propertyDataId);
member this.GetPropertyData : Guid -> obj
Public Function GetPropertyData (propertyDataId As Guid) As Object

参数

propertyDataId
Guid

该属性的唯一标识符。

返回

Object

包含属性数据的 object。

例外

ArgumentException

propertyDataId 不与 Stroke 的自定义属性关联。

示例

以下示例演示如何检索对象上的 Stroke 自定义属性。

// Create a guid for the date/timestamp.
Guid dtGuid = new Guid("03457307-3475-3450-3035-640435034540");

DateTime now = DateTime.Now;

// Check whether the property is already saved
if (thisStroke.ContainsPropertyData(dtGuid))
{
    // Check whether the existing property matches the current date/timestamp
    DateTime oldDT = (DateTime)thisStroke.GetPropertyData(dtGuid);

    if (oldDT != now)
    {
        // Update the current date and time
        thisStroke.AddPropertyData(dtGuid, now);
    }
}

' Create a guid for the date/timestamp.
Dim dtGuid As New Guid("03457307-3475-3450-3035-640435034540")

Dim now As DateTime = DateTime.Now

' Check whether the property is already saved
If thisStroke.ContainsPropertyData(dtGuid) Then
    ' Check whether the existing property matches the current date/timestamp
    Dim oldDT As DateTime = CType(thisStroke.GetPropertyData(dtGuid), DateTime)

    If oldDT <> now Then
        ' Update the current date and time
        thisStroke.AddPropertyData(dtGuid, now)
    End If
End If

适用于

另请参阅