.NET ： 如何读取图片中的元数据信息

如果我们希望在程序中对图片中包含的一些元数据信息进行读取，并作为后期分析的准备。那么可以参考下面这个例子

http://www.codeproject.com/KB/graphics/photoproperties.aspx

 

我在这基础上也做了一个范例，如下图的效果

代码大致如下

private void btSelectImageFile_Click(object sender, EventArgs e)
{
    OpenFileDialog dialog = new OpenFileDialog();
    dialog.Filter = "Image File (*.jpg)|*.jpg";
    if (dialog.ShowDialog() == DialogResult.OK)
    {
        pbImage.Image = Image.FromFile(dialog.FileName);

        JSG.PhotoPropertiesLibrary.PhotoProperties p = new JSG.PhotoPropertiesLibrary.PhotoProperties();
        p.Initialize();
        p.Analyze(dialog.FileName);
        JSG.PhotoPropertiesLibrary.ResultOptions options = new JSG.PhotoPropertiesLibrary.ResultOptions();

        MemoryStream ms = new MemoryStream();
        p.WriteXml(ms, options);
        if (ms.CanRead == false)
        {
            byte[] buffer = ms.GetBuffer();
            ms = new MemoryStream(buffer);
        }

        XDocument doc = XDocument.Load(new XmlTextReader(ms), LoadOptions.PreserveWhitespace);

        var query = from x in doc.Descendants("tagDatum")
                    select new
                       {
                           Id = x.Attribute("id").Value,
                           Category = x.Attribute("category").Value,
                           Name = x.Element("name").Value,
                           Description = x.Element("description").Value,
                           Value = x.Element("value").Value
                       };

        dgvProperties.DataSource = query.ToArray();

    }
}