public static bool TryGetValueAsObject(
this IPropertyHolder propertyBag,
string propertyName,
out object value)
{
return(propertyBag.TryGetValue <object>(propertyName, out value));
}
public static TValue GetValueOrDefault <TValue>(
this IPropertyHolder propertyBag,
string propertyName,
TValue defaultValue)
{
return(propertyBag.TryGetValue <TValue>(propertyName, out var value)
? value
: defaultValue);
}
public static TValue GetValueOrDefault <TValue>(
this IPropertyHolder propertyBag,
string propertyName,
Func <TValue> defaultValueProvider)
{
if (defaultValueProvider == null)
{
throw new ArgumentNullException(nameof(defaultValueProvider));
}
return(propertyBag.TryGetValue <TValue>(propertyName, out var value)
? value
: defaultValueProvider.Invoke());
}