/// <summary>
/// 更新记录
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public override bool Update(Domain.Attribute entity)
{
var result = false;
var original = FindById(entity.AttributeId);
using (UnitOfWork.Build(DbContext))
{
result = _repository.Update(entity);
//如果字段长度更改，并且大于原有的长度
if (entity.MaxLength > original.MaxLength)
{
//更改数据库表字段
_metadataProvider.AlterColumn(entity);
}
}
return(result);
}
public void AlterColumn(Domain.Attribute attr)
{
_metadataProvider.AlterColumn(attr);
}