//验证该班学生人数是否已超过额定
public static bool isInCapacity(string className)
{
int studentCapacity = Int32.Parse(BusinessRuler.ReaderWirteConfig.GetValueByKey("studentCapaticyInClass"));
DataAccess.Classes objClass = DataAccess.Classes.CreateInstance(className);
if (objClass.CurrentCount == studentCapacity)
{
MessageBox.Show("该班学生人数已满！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
return(true);
}
//修改班级
public void ModifyClass(string className, string director, DateTime entranceDate, string remark)
{
DataAccess.Classes objClass = new DataAccess.Classes(className);
objClass.Director = director;
objClass.EntranceDate = entranceDate;
objClass.Remark = remark;
if (objClass.Update() > 0)
{
UpdateDataGrid();
MessageBox.Show("修改班级资料成功！", "操作成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
//检查该班是否已开课
public bool IsCourseExist(string className)
{
DataAccess.Classes objClass = new DataAccess.Classes(className);
if (objClass.FillByAllSubjectName().Tables[0].Rows.Count > 0)
{
return(true);
}
else
{
MessageBox.Show(className + " 班尚无课程，无法进行成绩管理，请先添加课程！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
//验证该班是否有学生
public bool IsStudentExists(string className)
{
DataAccess.Classes objClass = DataAccess.Classes.CreateInstance(className);
if (objClass.CurrentCount > 0)
{
return(true);
}
else
{
MessageBox.Show("该班目前还没有学生，无法进行成绩管理，请首先添加学生！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(false);
}
}
//删除班级
public void DeleteClass(string className)
{
if (!CheckExists(className))
{
MessageBox.Show("班级名" + className + "不存在，请重新输入班级名！", "班级名不存在", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
if (DialogResult.Yes == MessageBox.Show("真的要删除班级' " + className + " '吗?\n 删除该班时，将同时删除该班所有学生的档案及相关课程、成绩的记录，确定要继续吗？", "删除确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question))
{
DataAccess.Classes objClass = new DataAccess.Classes(className);
if (objClass.Delete() > 0)
{
UpdateDataGrid();
MessageBox.Show("成功删除班级' " + className + " '!", "操作成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
