/// <summary>
/// Extracts an icon from a givin icon file or an executable module (.dll or an .exe file).
/// </summary>
/// <param name="fileName">The path of the icon file or the executable module.</param>
/// <param name="iconIndex">The index of the icon in the executable module.</param>
/// <returns>A System.Drawing.Icon extracted from the file at the specified index in case of an executable module.</returns>
public static Icon ExtractIcon(string fileName, int iconIndex)
{
//Try to load the file as icon file.
if (System.IO.Path.GetExtension(fileName).Equals(".ico", StringComparison.InvariantCultureIgnoreCase))
{
return(new Icon(fileName));
}
//Load the file as an executable module.
using (IconExtractor extractor = new IconExtractor(fileName))
{
return(extractor.GetIconAt(iconIndex));
}
}
/// <summary>
/// Returns the number of icons in a file.
/// </summary>
/// <param name="fileName">The path to an .ico, .dll, or .exe file.</param>
/// <returns></returns>
public static int GetIconCount(string fileName)
{
//Try to load the file as icon file.
if (System.IO.Path.GetExtension(fileName).Equals(".ico", StringComparison.InvariantCultureIgnoreCase))
{
return(1);
}
try
{
using (IconExtractor extractor = new IconExtractor(fileName))
{
return(extractor.IconCount);
}
}
catch { }
return(0);
}
/// <summary>
/// Extracts all the icons from a givin icon file or an executable module (.dll or an .exe file).
/// </summary>
/// <param name="fileName">The path of the icon file or the executable module.</param>
/// <returns>
/// A list of System.Drawing.Icon found in the file.
/// If the file was an icon file, it will return a list containing a single icon.
/// </returns>
public static List <Icon> ExtractAllIcons(string fileName)
{
List <Icon> list = new List <Icon>();
//Try to load the file as icon file.
if (System.IO.Path.GetExtension(fileName).Equals(".ico", StringComparison.InvariantCultureIgnoreCase))
{
list.Add(new Icon(fileName));
return(list);
}
//Load the file as an executable module.
using (IconExtractor extractor = new IconExtractor(fileName))
{
for (int i = 0; i < extractor.IconCount; i++)
{
list.Add(extractor.GetIconAt(i));
}
}
return(list);
}
