public override async Task <string?> OnSetPropertyValueAsync(
string unevaluatedPropertyValue,
IProjectProperties defaultProperties,
IReadOnlyDictionary <string, string>?dimensionalConditions = null)
{
// Don't set the new value if both of the following is true:
// 1. There is no existing property entry AND
// 2. The new value is identical to the default value.
IEnumerable <string> propertyNames = await defaultProperties.GetPropertyNamesAsync();
if (!propertyNames.Contains(PropertyName))
{
if (Version.TryParse(unevaluatedPropertyValue, out Version version))
{
Version defaultVersion = await GetDefaultVersionAsync(defaultProperties);
if (version.Equals(defaultVersion))
{
return(null);
}
}
}
return(await base.OnSetPropertyValueAsync(unevaluatedPropertyValue, defaultProperties, dimensionalConditions));
}
public virtual Task <IEnumerable <string> > GetPropertyNamesAsync() => DelegatedProperties.GetPropertyNamesAsync();