CacheData

EmfImage.CacheData method

Caches the data and ensures no additional data loading will be performed from the underlying DataStreamContainer.

public override void CacheData()

Examples

This example shows how to load a EMF image from a file and list all of its records.

[C#]

string dir = "c:\\temp\\";

// Using Aspose.Imaging.Image.Load is a unified way to load all types of images including WMF.
using (Aspose.Imaging.FileFormats.Emf.EmfImage emfImage = (Aspose.Imaging.FileFormats.Emf.EmfImage)Aspose.Imaging.Image.Load(dir + "test.emf"))
{
    // Cache data to load all records.
    emfImage.CacheData();
    System.Console.WriteLine("The total number of records: {0}", emfImage.Records.Count);

    // The key is a record type, the value is number of records of that type in the WMF image.
    System.Collections.Generic.Dictionary<System.Type, int> types =
        new System.Collections.Generic.Dictionary<System.Type, int>();

    // Gather statistics 
    foreach (Aspose.Imaging.FileFormats.Emf.Emf.Records.EmfRecord obj in emfImage.Records)
    {
        System.Type objType = obj.GetType();
        if (!types.ContainsKey(objType))
        {
            types.Add(objType, 1);
        }
        else
        {
            types[objType]++;
        }
    }

    // Print statistics
    System.Console.WriteLine("Record Type                              Count");
    System.Console.WriteLine("----------------------------------------------");
    foreach (System.Collections.Generic.KeyValuePair<System.Type, int> entry in types)
    {
        string objectType = entry.Key.Name;
        string alignmentGap = new string(' ', 40 - objectType.Length);
        System.Console.WriteLine("{0}:{1}{2}", entry.Key.Name, alignmentGap, entry.Value);
    }
}

//The output may look like this:
//The total number of records: 1188
//Record Type                              Count
//----------------------------------------------
//EmfMetafileHeader:                       1
//EmfSetBkMode:                            1
//EmfSetTextAlign:                         1
//EmfSetRop2:                              1
//EmfSetWorldTransform:                    1
//EmfExtSelectClipRgn:                     1
//EmfCreateBrushIndirect:                  113
//EmfSelectObject:                         240
//EmfCreatePen:                            116
//EmfSetPolyFillMode:                      1
//EmfBeginPath:                            120
//EmfMoveToEx:                             122
//EmfPolyBezierTo16:                       36
//EmfLineTo:                               172
//EmfCloseFigure:                          14
//EmfEndPath:                              120
//EmfStrokeAndFillPath:                    113
//EmfStrokePath:                           7
//EmfSetTextColor:                         2
//EmfExtCreateFontIndirectW:               2
//EmfExtTextOutW:                          2
//EmfStretchBlt:                           1
//EmfEof:                                  1

See Also