public bool UpdateSpecificProperty(TEntity entity, params Expression <Func <TEntity, object> >[] propertyExpression)
{
using (var ctx = new OpsManageDbContext())
{
ctx.Set <TEntity>().Attach(entity);
foreach (Expression <Func <TEntity, Object> > expression in propertyExpression)
{
ctx.Entry(entity).Property(expression).IsModified = true;
}
return(ctx.SaveChanges() > 0);
}
}
/// <summary>
/// 批量新增
/// </summary>
/// <param name="entities"></param>
/// <returns></returns>
public bool Add(IList <TEntity> entities)
{
var result = false;
using (var ctx = new OpsManageDbContext())
{
ctx.Set <TEntity>().AddRange(entities);
var effectedRows = ctx.SaveChanges();
if (effectedRows > 0)
{
result = true;
}
}
return(result);
}
/// <summary>
/// 更新
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public bool Update(TEntity entity)
{
var result = false;
using (var ctx = new OpsManageDbContext())
{
ctx.Set <TEntity>().Update(entity);
var effectedRows = ctx.SaveChanges();
if (effectedRows > 0)
{
result = true;
}
}
return(result);
}
/// <summary>
/// 删除（按条件）
/// </summary>
/// <param name="predicate"></param>
/// <returns></returns>
public bool Remove(Expression <Func <TEntity, bool> > predicate)
{
var result = false;
using (var ctx = new OpsManageDbContext())
{
var items = ctx.Set <TEntity>().Where(predicate).ToList();
ctx.Set <TEntity>().RemoveRange(items);
var effectedRows = ctx.SaveChanges();
if (effectedRows > 0)
{
result = true;
}
}
return(result);
}