public DataSet GetTable(LoginUserModel objLoginUserModel)
{
BaseTale();
SqlString += "Where UserId'" + objLoginUserModel.UserId + "'Or UserRole='"+objLoginUserModel.UserRole+"'Or LoginCount='"+objLoginUserModel.LoginCount+"'";
return (objDataBaseOperateClass2.GetDataSet(SqlString));
}
//根据条件搜索用户名，用于验证用户名与密码、身份是否一致
//这是程序启动后，第一条发送到SQL数据库的语句;容易出现异常，所以这里进行异常捕捉、处理。
public SqlDataReader LoginUserRead(LoginUserModel objLoginUserModel)
{
SqlString = "Select UserId From LoginUser Where UserId='"+objLoginUserModel.UserId+"' AND UserPw='"+objLoginUserModel.UserPw+"' AND UserRole='"+objLoginUserModel.UserRole+"'";
//try{
return (objDataBaseOperateClass2.getread(SqlString));
#region MyRegion
//}
// catch (Exception e1)
// {
// if (MessageBox.Show("登录失败！你是否仔细阅读了使用说明呢？请根据错误消息进行处理。\n是否查看错误消息？", "温馨提醒", MessageBoxButtons.YesNo, MessageBoxIcon.Error) == DialogResult.Yes)
// {
// MessageBox.Show("错误消息：" + e1);
// //MessageBox.Show("即将返回使用说明窗口！");
// MessageBox.Show("再见!如需要登录使用，请重新启动程序，仔细阅读说明后再操作！", "温馨提醒", MessageBoxButtons.OK, MessageBoxIcon.Information);
// //Application.Exit(); //执行这一句后，为什么不能把整个程序结束呢？还会继续执行。怎样停止？或者改为调用其它窗口也可以。
// //Application.ExitThread();
// }
// else
// {
// //MessageBox.Show("即将返回使用说明窗口！");
//MessageBox.Show("再见!如需要登录使用，请重新启动程序，仔细阅读说明后再操作！","温馨提醒",MessageBoxButtons.OK, MessageBoxIcon.Information);
// Application.Exit();
// ////▲▲▲在类库文件可以调用窗口吗？要加using？加哪个？还是要通过另外一个方法来调用出窗口？
// }
// SqlDataReader aa=null;
// return aa;
//return (objDataBaseOperateClass2.getread(SqlString));
//▲▲▲怎样【不经过数据库】而返回一个空的SqlDataReader类型的变量，当连接不到数据库时，想让它返回一个空的,避免再次异常,
//文本控件的空值可以表示为:XXX.Text="",那SqlDataReader类型声明的变量如何赋空值？
#endregion
// }
}
//Add:
public bool AddLoginUser(LoginUserModel objLoginUserModel)
{
objLoginUserModel.UserPw = GetMD5.GetMd5.GetMd5_32(objLoginUserModel.UserId + objLoginUserModel.UserPw);
SqlString = "Insert into LoginUser(UserId,UserRole,UserPw,LoginCount) Values('" + objLoginUserModel.UserId + "','" + objLoginUserModel.UserRole + "','" + objLoginUserModel.UserPw + "','" + objLoginUserModel.LoginCount + "')";
return (objDataBaseOperateClass2.GetExecute(SqlString));
}
private void frmStuMain_FormClosing(object sender, FormClosingEventArgs e)
{
LoginUIBLL objLoginUIBLL = new LoginUIBLL();
LoginUserModel objLoginUserModel = new LoginUserModel();
objLoginUserModel.UserId = toolLoginUserId.Text;
objLoginUIBLL.UpdateLoginUserStateClose();
Application.Exit();
}
public DataTable ScoreStuSearch(LoginUserModel objLoginUserModel)
{
string SqlStringStu="Select SelCourse.StuNum AS 学号,StuName AS 姓名 ,CourseName As 课程,SelCourse.Score AS 成绩 From SelCourse Join Student on Student.StuNum=SelCourse.StuNum join Course on Course.CourseNum=SelCourse.CourseNum Where SelCourse.StuNum='"+objLoginUserModel.UserId+"'";
DataBaseOperateClass2 objDataBaseOperate2 = new DataBaseOperateClass2();
DataTable objDataTable;
return objDataTable = objDataBaseOperate2.ShowTable(SqlStringStu);
}
private void ChangeLoginRole_Click(object sender, EventArgs e)
{
LoginUI objLoginUI = new LoginUI();
objLoginUI.Show();
//this.Close();
this.Hide();
LoginUIBLL objLoginUIBLL = new LoginUIBLL();
LoginUserModel objLoginUserModel = new LoginUserModel();
objLoginUserModel.UserId = toolLoginUserId.Text;
objLoginUIBLL.UpdateLoginUserStateClose();
}
private void btnPost_Click(object sender, EventArgs e)
{
#region 获取当前登录用户ID
LoginUIBLL objLoginUIBLL = new LoginUIBLL();
LoginUserModel objLoginUserModel = new LoginUserModel();
SqlDataReader SqlRead;
SqlRead = objLoginUIBLL.LoginUserRead();
if (SqlRead.Read() == true)
{
objLoginUserModel.UserId = SqlRead["UserId"].ToString();
}
#endregion
string SqlString="Insert into V_StuWebComment";
#region 类型选择
if (rdbSuggest.Checked == true)
{
SqlString += "(学号,建议) Values('" + objLoginUserModel.UserId + "','" + txtComment.Text + "')";
}
if (rdbCriticism.Checked == true)
{
SqlString += "(学号,批评) Values('" + objLoginUserModel.UserId + "','" + txtComment.Text + "')";
}
if (rdbconsult.Checked == true)
{
SqlString += "(学号,咨询) Values('" + objLoginUserModel.UserId + "','" + txtComment.Text + "')";
}
#endregion
DataBaseOperateClass2 objDataBaseOperateClass2 = new DataBaseOperateClass2();
#region 异常处理
try
{
if (objDataBaseOperateClass2.GetExecute(SqlString) == true)
MessageBox.Show("成功提交！谢谢参与！");
else
MessageBox.Show("抱歉！提交失败！请查看错误消息：");
}
catch (Exception e1)
{
MessageBox.Show("抱歉！提交失败！请查看错误消息：");
MessageBox.Show("错误消息：" + e1);
}
#endregion
}
//Change LoginUser States
public bool UpdateLoginUserStates(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.UpdateLoginUserStateOpen(objLoginUserModel));
}
//Search:
public DataTable SearchLoginUser(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.SearchLoginUser(objLoginUserModel));
}
//按条件从数据库读取内容
public SqlDataReader LoginUserRead(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.LoginUserRead(objLoginUserModel));
}
public DataSet GetTable(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.GetTable(objLoginUserModel));
}
//Del:
public bool DelLoginUser(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.DelLoginUser(objLoginUserModel));
}
//Add;
public bool AddLoginUser(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.AddLoginUser(objLoginUserModel));
}
public DataTable LoginUserSearchStuInfo(LoginUserModel objLoginUserModel)
{
return (objStudentDAL.LoginUserSearchStuInfo(objLoginUserModel));
}
//Update:
public bool UpdatLoginUser(LoginUserModel objLoginUserModel)
{
return (objLoginUIDAL.UpdateLoginUser(objLoginUserModel));
}
//Search:
public DataTable SearchLoginUser(LoginUserModel objLoginUserModel)
{
SqlString = "Select UserId as 用户编号,UserRole AS 用户身份, UserPw as 用户密码 ,LoginCount AS 登录次数 From LoginUser Where UserId='" + objLoginUserModel.UserId + "'Or UserRole='" + objLoginUserModel.UserRole + "'Or LoginCount='" + objLoginUserModel.LoginCount + "'";
return objDataBaseOperateClass2.ShowTable(SqlString);
}
//Del:
public bool DelLoginUser(LoginUserModel objLoginUserModel)
{
SqlString = "Delete From LoginUser Where UserId='"+objLoginUserModel.UserId+"'";
return (objDataBaseOperateClass2.GetExecute(SqlString));
}
//Update:
public bool UpdateLoginUser(LoginUserModel objLoginUserModel)
{
objLoginUserModel.UserPw = GetMD5.GetMd5.GetMd5_32(objLoginUserModel.UserId + objLoginUserModel.UserPw);
SqlString ="Update LoginUser Set UserId='"+objLoginUserModel.UserId+"',UserRole='"+objLoginUserModel.UserRole+"',UserPw='"+objLoginUserModel.UserPw+"',LoginCount='"+objLoginUserModel.LoginCount+"'where UserID='"+objLoginUserModel.UserId+"'";
return (objDataBaseOperateClass2.GetExecute(SqlString));
}
//Changes LoginUser's States Use to Show Login Interface
public bool UpdateLoginUserStateOpen(LoginUserModel objLoginUserModel)
{
SqlString = "Update LoginUser Set State='连接' where UserId='" + objLoginUserModel.UserId + "'";
return (objDataBaseOperateClass2.GetExecute(SqlString));
}
public DataTable ScoreStuSearch(LoginUserModel objLoginUserModel)
{
return (objScoreSearchDAL.ScoreStuSearch(objLoginUserModel));
}
//按当前登录的身份来查找
public DataTable LoginUserSearchStuInfo(LoginUserModel objLoginUserModel)
{
string SqlString = "Select * From Student Where StuNum='"+objLoginUserModel.UserId + "'";
return (objDataBaseOperateClass2.ShowTable(SqlString));
}