This documentation is archived and is not being maintained.

StrokeCollectionConverter.ConvertFrom Method (ITypeDescriptorContext, CultureInfo, Object)

Converts the specified object to a StrokeCollection.

Namespace:  System.Windows
Assembly:  PresentationCore (in PresentationCore.dll)

public override Object ConvertFrom(
	ITypeDescriptorContext context,
	CultureInfo culture,
	Object value
)

Parameters

context
Type: System.ComponentModel.ITypeDescriptorContext
An ITypeDescriptorContext that provides a format context.
culture
Type: System.Globalization.CultureInfo
The CultureInfo to use as the current culture.
value
Type: System.Object
The Object to convert.

Return Value

Type: System.Object
A StrokeCollection converted from value.

The ConvertFrom method returns null if value is not a String.

The following example demonstrates how to convert a base-64, encoded Ink Serialized Format (ISF) string to a StrokeCollection. This assumes that there is an InkPresenter called presenter.


        // The base-64 encoded string that contains ink data 
        // in ink serialized format (ISF).
        string strokesString =
            @"AOoFAxBIEEVqGwIAWf9GahsCAFn/GRQyCACAEAIAAABCMwgAgA"
            + "wCAAAAQhWrqtNBq6rTQaVh0MSr+ivFHyEVVFVVVVV1OkBUVVVVVXU6QJ7"
            + "0SZ80DJrAVFVVVVV/pcAKU3yC/gEb+AX/k5Z8PwWBO5KktgJSUAAKjzyC"
            + "wBZYLEoCJLd+Cbti873JlTUvn158doCC/gKb+ApwAJslSywE2ALAAWPPI"
            + "FhKWBKWAKAmwJVglAKACiMjgv3d+8Xi+fHWM2WC0zcm89+NSoL+A5P4Dl"
            + "uNlhFIqpLKAAoaF4L+AhP4CFAWAWCggv4Dc/gNty2yy5SrlKAKIhyC/gI"
            + "b+Ai+JZc2XZOyb46vLQCC/gOL+A5YDNlWFjN3CwAKQFeC/gOr+A7VhUFZ"
            + "KCsS2WTc2SyhKuWVLR3ly2LAXx574ssUgv4Dm/gOcCwEEpUTYSixUsuWy"
            + "gVZ79AQsWGyWUAKLCiC/gQT+BA9SWbllDfGqy3Lcu+OmfH8EIL+BDv4EP"
            + "XLKSpY3lVFhZuVZvKACkFggv4F2/gXlKLFuCVKTcsqUlkoRKBmk8zfFll"
            + "S2ySlACwAgv4Ds/gO+WWWWLBLFllllSksAoSkWG1kSbFu5AoAAAo/YoL+"
            + "Biv4GJJU+P4qSalUBKWdkBYCbm+Nliyk1CVKgCxYNYqC/gQb+BBwO8ABY"
            + "olDz4gAEzaw2AVCUKAsWCooCiAegv4Hw/gfEJe8zUoSgLCC/gNT+A0xM7"
            + "Gdmdliay2VaAo0PoL+B7v4Hx5Yq3lc2xZsseeC3N8aDXjUpWW4UIL+A5P"
            + "4DnhYqAIWFkqpcrLZuJuWqSyxVAovNoL+CJP4IjnlkDvHeSbSVd9FqFlI"
            + "oWAAgv4Dk/gOVc7gbmdyZ1LajFFJmlRKsoAKVXmC/go7+CjdRvredypaK"
            + "myLC7ytZQqFiyWbikAEvfg2pSVKS7liSwWJNsrbi4CC/gQD+A/9M2ACxU"
            + "qKjcVuXKiosCWWKQSyhvKRUUWULCwEmyyu4gA=";



...


// Accepts a string that contains ink data in ink 
// serialized format (ISF) and converts it into a StrokeCollection.
public void LoadStrokes()
{
    StrokeCollectionConverter converter =
        new StrokeCollectionConverter();

    if (converter.CanConvertFrom(typeof(string)))
    {
        StrokeCollection newStrokes =
            (StrokeCollection)converter.ConvertFrom(null, null, strokesString);
        presenter.Strokes.Clear();
        presenter.Strokes.Add(newStrokes);
    }
}


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Show: