Windows Dev Center

Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

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: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Show:
© 2015 Microsoft