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Image.PropertyItems Property

Gets all the property items (pieces of metadata) stored in this Image.

Namespace: System.Drawing
Assembly: System.Drawing (in system.drawing.dll)

public PropertyItem[] PropertyItems { get; }
/** @property */
public PropertyItem[] get_PropertyItems ()

public function get PropertyItems () : PropertyItem[]

Not applicable.

Property Value

An array of PropertyItem objects, one for each property item stored in the image.

If the image has no property items or if the image format does not support property items, PropertyItems returns an empty array (that is, an array of length zero).

The following code example demonstrates how to read and display the metadata in an image file using the System.Drawing.Imaging.PropertyItem class and the PropertyItems property.

This example is designed to be used a Windows Form that imports the System.Drawing.Imaging namespace. Paste the code into the form and change the path to fakePhoto.jpg to point to an image file on your system. Call the ExtractMetaData method when handling the form's Paint event, passing e as PaintEventArgs.

private void ExtractMetaData(PaintEventArgs e)
{
    try
    {
        // Create an Image object. 
        Image theImage = new Bitmap("c:\\fakePhoto.jpg");

        // Get the PropertyItems property from image.
        PropertyItem[] propItems = theImage.PropertyItems;

        // Set up the display.
        Font font1 = new Font("Arial", 10);
        SolidBrush blackBrush = new SolidBrush(Color.Black);
        int X = 0;
        int Y = 0;

        // For each PropertyItem in the array, display the id, 
        // type, and length.
        int count = 0;
        foreach ( PropertyItem propItem in propItems )
        {
            e.Graphics.DrawString("Property Item " + 
                count.ToString(), font1, blackBrush, X, Y);
            Y += font1.Height;

            e.Graphics.DrawString("   ID: 0x" + 
                propItem.Id.ToString("x"), font1, blackBrush, X, Y);
            Y += font1.Height;

            e.Graphics.DrawString("   type: " +
                propItem.Type.ToString(), font1, blackBrush, X, Y);
            Y += font1.Height;

            e.Graphics.DrawString("   length: " + 
                propItem.Len.ToString() + 
                " bytes", font1, blackBrush, X, Y);
            Y += font1.Height;
            count += 1;
        }
        font1.Dispose();
    }
    catch(Exception)
    {
        MessageBox.Show("There was an error." + 
            "Make sure the path to the image file is valid.");
    }

}

private void ExtractMetaData(PaintEventArgs e)
{
    try {
        // Create an Image object. 
        Image theImage = new Bitmap("c:\\fakePhoto.jpg");

        // Get the PropertyItems property from image.
        PropertyItem propItems[] = theImage.get_PropertyItems();

        // Set up the display.
        Font font1 = new Font("Arial", 10);
        SolidBrush blackBrush = new SolidBrush(Color.get_Black());
        int X = 0;
        int Y = 0;

        // For each PropertyItem in the array, display the id, 
        // type, and length.
        int count = 0;

        //foreach (PropertyItem propItem in propItems)
        for (int iCtr = 0; iCtr < propItems.length; iCtr++) {
            PropertyItem propItem = propItems[iCtr];
            e.get_Graphics().DrawString("Property Item "  
                + System.Convert.ToString(count), font1, blackBrush, X, Y);
            Y += font1.get_Height();
            e.get_Graphics().DrawString("   ID: 0x" 
                + ((System.Int32)propItem.get_Id()).ToString("x"), font1, 
                blackBrush, X, Y);
            Y += font1.get_Height();
            e.get_Graphics().DrawString("   type: "  
                + System.Convert.ToString(propItem.get_Type()), font1, 
                blackBrush, X, Y);
            Y += font1.get_Height();
            e.get_Graphics().DrawString("   length: "  
                + System.Convert.ToString(propItem.get_Len()) + " bytes", 
                font1, blackBrush, X, Y);
            Y += font1.get_Height();
            count += 1;
        }
        font1.Dispose();
    }
    catch (System.Exception exp) {
        MessageBox.Show(("There was an error."  
            + "Make sure the path to the image file is valid."));
    }
} //ExtractMetaData

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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