简单更新，返回成功/失败

new DBHelper<DTStudentModel>()
.Update()
.Where(p => p.IdentityID == p.IdentityID);
.Execute(new DTStudentModel()
{
    IdentityID = 1,
    StuCode = "01",
    StuName = "张三",
    StuAge = DateTime.Parse("2012-10-02"),
    StuSex = "男"
});
-- 对应 SQL
update T_Student set StuCode=@StuCode,StuName=@StuName,StuAge=@StuAge,StuSex=@StuSex where ([T_Student].[IdentityID] = @IdentityID)
    

简单更新，返回影响行数

new DBHelper<DTStudentModel>()
.Update()
.Where(p => p.IdentityID == p.IdentityID);
.AffectedRows(new DTStudentModel()
{
    IdentityID = 1,
    StuCode = "01",
    StuName = "张三",
    StuAge = DateTime.Parse("2012-10-02"),
    StuSex = "男"
});
-- 对应 SQL
update T_Student set StuCode=@StuCode,StuName=@StuName,StuAge=@StuAge,StuSex=@StuSex where ([T_Student].[IdentityID] = @IdentityID)
    

简单更新，排除某些字段

new DBHelper<DTStudentModel>()
.Exclude(p => new { p.StuCode, p.StuAge })
.Update()
.Execute(new DTStudentModel()
{
    IdentityID = 1,
    StuName = "张三",
    StuSex = "男"
});
-- 对应 SQL
update T_Student set StuName=@StuName,StuSex=@StuSex where ([T_Student].[IdentityID] = @IdentityID)