protected override void InternalValidate()
{
if (!ImportUMPrompt.IsDesktopExperienceRoleInstalled())
{
ServerIdParameter serverIdParameter = new ServerIdParameter();
base.WriteError(new DesktopExperienceRequiredException(serverIdParameter.Fqdn), ErrorCategory.NotInstalled, null);
}
base.InternalValidate();
long num = (this.PromptFileData != null) ? ((long)this.PromptFileData.Length) : this.PromptFileStream.Length;
if (num > 5242880L)
{
this.HandleOversizeAudioData();
}
if (this.PromptFileName.Length > 128 || !string.Equals(Path.GetFileName(this.PromptFileName), this.PromptFileName))
{
base.WriteError(new InvalidFileNameException(128), ErrorCategory.InvalidArgument, null);
}
}
private static bool IsDesktopExperienceRoleInstalled()
{
string systemDirectory = Environment.SystemDirectory;
return(!string.IsNullOrEmpty(systemDirectory) && Environment.OSVersion.Version.Major >= 6 && ImportUMPrompt.CheckVersionInfo(Path.Combine(systemDirectory, "wmvcore.dll"), 3802) && ImportUMPrompt.CheckVersionInfo(Path.Combine(systemDirectory, "wmspdmod.dll"), 3804) && ImportUMPrompt.CheckVersionInfo(Path.Combine(systemDirectory, "wmspdmoe.dll"), 3804));
}