Redigeeri

Jagamisviis:

Stroke.AddPropertyData(Guid, Object) Method

  • Reference

Definition

Namespace:
System.Windows.Ink
Assembly:
PresentationCore.dll

Adds a custom property to the Stroke object.

public:
 void AddPropertyData(Guid propertyDataId, System::Object ^ propertyData);
public void AddPropertyData (Guid propertyDataId, object propertyData);
member this.AddPropertyData : Guid * obj -> unit
Public Sub AddPropertyData (propertyDataId As Guid, propertyData As Object)

Parameters

propertyDataId
Guid

The unique identifier for the property.

propertyData
Object

The value of the custom property. propertyData must be of type Char, Byte, Int16, UInt16, Int32, UInt32, Int64, UInt64, Single, Double, DateTime, Boolean, String, Decimal or an array of these data types, except String, which is not allowed.

Exceptions

ArgumentException

The propertyData argument is not one of the allowed data types listed in the Parameters section.

Examples

The following example demonstrates how to add a custom property to a Stroke object.

// 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

Remarks

This method is useful if you need to store extra information in the Stroke.

Applies to

See also