protected override void SetValue(string key, object value)
{
var item = Collection[key];
if (item == null)
{
if (!IsNullValue(key, value))
{
Collection[key] = new EntityItem() { Key = key, Value = value };
}
}
else
{
if (IsNullValue(key, value))
{
if (ID > 0)
{
//清空数据库字段中的值
(item as EntityItem).Value = DBNull.Value;
}
else
{
Collection.Remove(key);
}
}
else
{
(item as EntityItem).Value = value;
}
}
}
internal virtual void SetDbValue(string key, object value)
{
if (value != DBNull.Value)
{
Collection[key] = new EntityItem() { Key = key, Value = value };
}
}