protected void VerifyIsNotValid()
{
if (this.IsValid)
{
ExceptionUtil.ThrowInvalidOperationException();
}
}
protected void VerifyIsValid()
{
if (!this.isValid)
{
ExceptionUtil.ThrowInvalidOperationException("This instance has been invalidated. If you are handling the event asynchronously, or storing the EventArgs for use outside the event handler method, you should first call Clone() to get a copy of this instance.");
}
}
public static void AssertService <TService>(this IServiceProvider serviceProvider) where TService : class
{
if (serviceProvider.GetService <TService>() == null)
{
ExceptionUtil.ThrowInvalidOperationException();
}
}
public static T EnsureInitialized <T, TContext>(ref T target, TContext context, Func <TContext, T> valueFactory, out T unusedValue) where T : class
{
if (((T)target) != null)
{
unusedValue = default(T);
return(target);
}
T local = valueFactory(context);
if (local == null)
{
ExceptionUtil.ThrowInvalidOperationException("valueFactory may not return null");
}
T local2 = Interlocked.CompareExchange <T>(ref target, local, default(T));
if (local2 == null)
{
unusedValue = default(T);
return(local);
}
unusedValue = local;
return(local2);
}