/// <summary>
/// 判断班级是否已经存在
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static bool IsCunZai(string name, int GradeID, int SchoolID)
{
using (FaceContext FC = new FaceContext()) {
var result = FC.Set <Class>().Any(i => i.Name == name && i.SchoolID == SchoolID && i.GradeID == GradeID && i.IsDelete == false);
return(result);
}
}
/// <summary>
/// 异步保存，第二个参数意思是：不是每一次添加都要保存，可以先add进去，再一起保存
/// </summary>
/// <param name="t">要保存的对象</param>
/// <param name="isSave">是否保存</param>
/// <returns></returns>
public async Task CreatAsync(T t, bool isSave)
{
_db.Set <T>().Add(t);
if (isSave)
{
await _db.SaveChangesAsync();
}
}