private void AddValidationRule(string propertyName, IViewModelValidationRule rule)
{
if (ValidationRules.ContainsKey(propertyName))
{
ValidationRules[propertyName].Add(rule);
}
else
{
ValidationRules.Add(propertyName, new List <IViewModelValidationRule> {
rule
});
}
}
protected void AddValidationRule <TResult>(Expression <Func <TResult> > propertyExpression, IViewModelValidationRule rule)
{
if (propertyExpression.Body.NodeType == ExpressionType.MemberAccess)
{
var memberExpr = propertyExpression.Body as MemberExpression;
if (memberExpr != null)
{
string propertyName = memberExpr.Member.Name;
AddValidationRule(propertyName, rule);
}
else
{
throw new Exception("Property not found");
}
}
}