/// <summary>
/// Get additional information about parameter for property validators
/// </summary>
/// <typeparam name="TObject">Type of instance</typeparam>
/// <typeparam name="TParam">Type of parameter</typeparam>
/// <param name="paramExpression">Expression which contain parameter</param>
/// <returns>Property name (if parameter is property), display name source (if exists) and compiled function</returns>
public static ParameterInfo <TObject, TParam> GetParameterInfo <TObject, TParam>(this Expression <Func <TObject, TParam> > paramExpression)
where TObject : IValidatableObject
{
var paramName = GetPropertyName(typeof(TObject), paramExpression);
var funcValue = paramExpression.Compile();
if (string.IsNullOrEmpty(paramName) == true)
{
return(new ParameterInfo <TObject, TParam>(paramName, null, funcValue));
}
var displayNameSource = ValidationOptions.DisplayNameResolver(typeof(TObject), null, paramExpression);
return(new ParameterInfo <TObject, TParam>(paramName, displayNameSource, funcValue));
}
