/// <summary>
/// Configures the file dialog.
/// </summary>
/// <param name="fileDialog">The file dialog.</param>
/// <param name="context">The determine file context.</param>
/// <exception cref="ArgumentNullException">The <paramref name="fileDialog"/> is <c>null</c>.</exception>
protected virtual void ConfigureFileDialog(FileDialog fileDialog, DetermineFileContext context)
{
Argument.IsNotNull("fileDialog", fileDialog);
Argument.IsNotNull("context", context);
fileDialog.Filter = context.Filter;
fileDialog.FileName = context.FileName;
fileDialog.AddExtension = context.AddExtension;
fileDialog.CheckFileExists = context.CheckFileExists;
fileDialog.CheckPathExists = context.CheckPathExists;
fileDialog.FilterIndex = context.FilterIndex;
fileDialog.InitialDirectory = GetInitialDirectory(context);
fileDialog.Title = context.Title;
fileDialog.ValidateNames = context.ValidateNames;
}
/// <summary>
/// Gets the initial directory used for the file dialog.
/// <para />
/// The default implementation not only uses the <see cref="InitialDirectory"/> property, but also
/// checks whether it actually exists on disk to prevent exceptions.
/// </summary>
/// <returns>The inital directory.</returns>
protected virtual string GetInitialDirectory(DetermineFileContext context)
{
Argument.IsNotNull(nameof(context), context);
var initialDirectory = context.InitialDirectory;
if (!string.IsNullOrWhiteSpace(initialDirectory))
{
if (!Directory.Exists(initialDirectory))
{
initialDirectory = null;
}
else
{
initialDirectory = IO.Path.AppendTrailingSlash(initialDirectory);
}
}
return(initialDirectory);
}