private void PrintPropertyValues(System.Data.Entity.Infrastructure.DbPropertyValues currentValues, StreamWriter sw)
{
foreach (var item in currentValues.PropertyNames)
{
var valor = currentValues[item];
sw.WriteLine(item + ": " + valor);
}
}
//public static T DeepClone<T>(T toClone)
//{
// T toCloneInto = default(T);
// var properties = toClone.GetType().GetProperties();
// foreach (var property in properties)
// {
// var value = property.GetValue(toClone);
// property.SetValue(toCloneInto, value);
// }
// return toCloneInto;
//}
public static T CreateWithValues <T>(System.Data.Entity.Infrastructure.DbPropertyValues values)
where T : new()
{
T entity = new T();
Type type = typeof(T);
foreach (var name in values.PropertyNames)
{
var property = type.GetProperty(name);
property.SetValue(entity, values.GetValue <object>(name));
}
return(entity);
}
public bool GetIsReallyChanged(bool ForceDetectChanges = false)
{
// cache original values
if (ReferenceEquals(_originalValues, null))
{
DBContextBase ctx = null;
bool oldState = true; // if something goes wrong it will force TRUE, it can slow down program, but cant break anything
try{
ctx = GetCtx();
if (ctx == null)
{
throw new ApplicationException("GetIsReallyChanged need db context!");
}
// defaultly off
oldState = ctx.Configuration.AutoDetectChangesEnabled;
ctx.Configuration.AutoDetectChangesEnabled = ForceDetectChanges;
System.Data.Entity.Infrastructure.DbEntityEntry <EntityBase> _Entry = ctx.Entry(this as EntityBase);
if (ReferenceEquals(_Entry, null) || ReferenceEquals(_Entry.OriginalValues, null))
{
throw new ApplicationException("GetIsReallyChanged can't identify entity in db contet!");
}
_originalValues = _Entry.OriginalValues;
}finally{
// be sure autodetect is on
if (!ReferenceEquals(ctx, null))
{
ctx.Configuration.AutoDetectChangesEnabled = oldState;
}
}
if (ReferenceEquals(_originalValues, null))
{
throw new ApplicationException("GetIsReallyChanged can't work without original values!");
}
}
/* just use original values and manually test */
foreach (string en in _originalValues.PropertyNames)
{
if (!Equals(_originalValues[en], GetPropertyValue(en)))
{
return(true);
}
}
// not changed
return(false);
}
public static object GetDbValue(this System.Data.Entity.Infrastructure.DbPropertyValues propertyValues, string propertyName)
{
}
