/// <summary>
/// 查询数据列表
/// </summary>
/// <param name="whereLambda">查询表达式</param>
/// <returns>数据列表</returns>
public List <T> QueryList <T>(Expression <Func <T, bool> > whereLambda) where T : class
{
using (CommonEntities db = new CommonEntities())
{
return(db.Set <T>().Where(whereLambda).ToList());
}
}
/// <summary>
/// 是否存在
/// </summary>
/// <param name="anyLambda">查询表达式</param>
/// <returns>布尔值</returns>
public bool Exist <T>(Expression <Func <T, bool> > anyLambda) where T : class
{
using (CommonEntities db = new CommonEntities())
{
return(db.Set <T>().Any(anyLambda));
}
}
/// <summary>
/// 查询数据
/// </summary>
/// <param name="Lambda">表达式</param>
/// <returns>数据实体</returns>
public T Query <T>(Expression <Func <T, bool> > whereLambda) where T : class
{
using (CommonEntities db = new CommonEntities())
{
return(db.Set <T>().FirstOrDefault(whereLambda));
}
}
