/// <summary>
/// Returns the encoder for the specified <paramref name="filename"/>.
/// </summary>
/// <param name="filename">The filename.</param>
/// <param name="encoder">The encoder.</param>
/// <returns>
/// <b>True</b> if the encoder is created and initialized; otherwise, <b>false</b>.
/// </returns>
/// <exception cref="NotSupportedException">Thrown if encoder is not created.</exception>
public bool GetEncoder(string filename, out EncoderBase encoder)
{
// create encoder
encoder = AvailableEncoders.CreateEncoder(filename);
// indicates whether the encoder can add images to the existing multipage image file
bool canAddImagesToExistingFile = false;
// if encoder can add images to the existing multipage image file
if (CanAddImagesToExistingFile)
{
// if file exists
if (File.Exists(filename))
{
// specify that encoder can add images to the existing multipage image file
canAddImagesToExistingFile = true;
}
}
// if encoder is not found
if (encoder == null)
{
throw new NotSupportedException(string.Format("Can not find encoder for '{0}'.", filename));
}
// set encoder settings
return(ShowEncoderSettingsDialogAndCheckOverwrite(
filename,
ref encoder,
canAddImagesToExistingFile,
true));
}
/// <summary>
/// Returns the multipage encoder for the specified <paramref name="filename"/>.
/// </summary>
/// <param name="filename">The filename.</param>
/// <param name="multipageEncoder">The multipage encoder.</param>
/// <returns>
/// <b>True</b> if the multipage encoder is created and initialized; otherwise, <b>false</b>.
/// </returns>
public bool GetMultipageEncoder(string filename, out MultipageEncoderBase multipageEncoder)
{
// create encoder
EncoderBase encoder = AvailableEncoders.CreateEncoder(filename);
// indicates whether the encoder can add images to the existing multipage image file
bool canAddImagesToExistingFile = false;
// if encoder can add images to the existing multipage image file
if (CanAddImagesToExistingFile)
{
// if file exists
if (File.Exists(filename))
{
// specify that encoder can add images to the existing multipage image file
canAddImagesToExistingFile = true;
}
}
// get the multipage encoder
multipageEncoder = encoder as MultipageEncoderBase;
// if encoder is not multipage
if (multipageEncoder == null)
{
return(false);
}
// set encoder settings
bool result = ShowEncoderSettingsDialogAndCheckOverwrite(
filename,
ref encoder,
canAddImagesToExistingFile,
multipageEncoder.CreateNewFile);
multipageEncoder = encoder as MultipageEncoderBase;
return(result);
}