//添加按钮
private void button1_Click(object sender, EventArgs e)
{
if (TB_course_ID.Text.Trim() == "" || TB_course_NAME.Text.Trim() == "")
{
MessageBox.Show("请将信息填写完整", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
try
{
string count = "select count(*) from SC_result where cour_id='" + TB_course_ID.Text + "'";
if (operate.HumanNum(count) == 0)
{
MessageBox.Show("此课程为此学期的一个新课程");
string strAdd = "insert into Coures values ('" + TB_course_ID.Text + "','" + TB_course_NAME.Text + "','" + CBB_semester.Text + "')";
operate.OperateData(strAdd);
}
string sqlstr = "INSERT into [dbo].[SC_result] ([Stu_Id],[Cour_Id],[Cour_Name]) select distinct A.Stu_Id,'" + TB_course_ID.Text + "','" + TB_course_NAME.Text + "' from Student as A join SC_result AS B on A.Stu_Id=B.stu_id join Coures AS C on B.Cour_Id=C.Cour_Id where C.Cour_Semester='" + CBB_semester.Text.ToString() + "' and A.stu_class='" + CBB_class.Text.ToString() + "'";
int i = operate.OperateData(sqlstr);//更新数据库内容
if (i > 0)
{
MessageBox.Show("添加用户信息成功", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
button2_Click(sender, e);
return;//关闭事件
}
}
catch
{
MessageBox.Show("此班本学期已使用此课程号", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
//删除按钮
private void button3_Click(object sender, EventArgs e)
{
try
{
if (this.dataGridView1.SelectedCells.Count == 0)
{
MessageBox.Show("请选择要删除的数据！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
string stuclass = dataGridView1.SelectedCells[0].Value.ToString(); //得到班级信息
string CourID = dataGridView1.SelectedCells[1].Value.ToString(); //得到课程信息
//string count = "select count(*) from SC_result join student on student.stu_id=SC_result.stu_id join Coures on Coures.cour_id=SC_result.cour_id where SC_result.Cour_Id='" + CourID + "' and student.stu_class='" + cbbClass.SelectedItem.ToString() + "' and Coures.Cour_Semester='" + cbbSemester.SelectedItem.ToString() + "'";
string count = "select count(*) from SC_result where cour_id='" + CourID + "'";
string Delsql = "delete from SC_result where Cour_Id='" + CourID + "' and Stu_Id in (select stu_id from Student where stu_class='" + stuclass + "')";
operate.OperateData(Delsql);//删除成绩信息
if (operate.HumanNum(count) == 0)
{
string delCID = "delete from Coures where Cour_Id='" + CourID + "'";
operate.OperateData(delCID);//删除课程信息
}
MessageBox.Show("删除成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch
{
MessageBox.Show("删除失败", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
//保存按钮(老师)
private void btn_keep_tea_Click(object sender, EventArgs e)
{
if (TB_tea_ID.Text.Trim() == "" || TB_tea_name.Text.Trim() == "" || TB_tea_pay.Text.Trim() == "" || TB_tea_phone.Text.Trim() == "")
{
MessageBox.Show("请将信息填写完整", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
if (TB_tea_phone.Text.Length != 11)
{
MessageBox.Show("手机号码为11位");
return;
}
else
{
try
{
string strsql = "update [dbo].[Teacher] set [Tea_Name]='" + TB_tea_name.Text.ToString() + "',[Tea_Sex]='" + CBB_tea_sex.Text.ToString() + "',[Tea_Dept]='" + CBB_tea_dept.Text.ToString() + "',[Tea_Birthday]='" + Time_tea_birth.Value.ToString("yyyy年MM月d日") + "',[Tea_Nation]='" + CBB_tea_nation.Text.ToString() + "',[Tea_Marriage]='" + CBB_tea_marry.Text.ToString() + "',[Tea_MCCP]='" + CBB_tea_MCCP.Text.ToString() + "',[Tea_Phone]='" + TB_tea_phone.Text.ToString() + "',[Tea_Accession]='" + Time_tea_enter.Value.ToString("yyyy年MM月d日") + "',[Tea_Pay]='" + TB_tea_pay.Text.ToString() + "' where [Tea_Id]='" + TB_tea_ID.Text.ToString() + "' ";
int num = operate.OperateData(strsql);
operate.TeaSaveImages(this.TB_tea_ID.Text.Trim(), openFileDialog1);
if (num > 0)
{
MessageBox.Show("教师信息修改成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
}
}
catch (Exception)
{
MessageBox.Show("你的输入有误", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
//删除按钮
private void delete_Click(object sender, EventArgs e)
{
try
{
if (this.dataGridView1.SelectedCells.Count == 0)
{
MessageBox.Show("请选择要删除的数据", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
string YGID = dataGridView1.SelectedCells[0].Value.ToString();//学生号或者教师号码
string table; string ID_name;
if (treeView1.SelectedNode.Text == "所有学生")
{
table = "student";
ID_name = "stu_id";
}
else
{
table = "teacher";
ID_name = "tea_id";
}
operate.DeleUserInfo(YGID); //删除相关信息
string Delsql = "delete from " + table + " where " + ID_name + "='" + YGID + "'";
operate.OperateData(Delsql); //删除（教师表/学生表）信息
MessageBox.Show("删除成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch
{
MessageBox.Show("删除操作失败", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
//保存按钮(老师)
private void btn_keep_tea_Click(object sender, EventArgs e)
{
if (TB_tea_ID.Text.Trim() == "" || TB_tea_name.Text.Trim() == "" || TB_tea_pay.Text.Trim() == "" || TB_tea_phone.Text.Trim() == "")
{
MessageBox.Show("请将信息填写完整", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
if (TB_tea_phone.Text.Length != 11)
{
MessageBox.Show("手机号码为11位");
return;
}
else
{
try
{
string strsql = "INSERT INTO [dbo].[Teacher] ([Tea_Id],[Tea_Name],[Tea_Sex],[Tea_Dept],[Tea_Birthday],[Tea_Nation],[Tea_Marriage],[Tea_MCCP],[Tea_Phone],[Tea_Accession],[Tea_Pay]) VALUES ('" + TB_tea_ID.Text.ToString() + "','" + TB_tea_name.Text.ToString() + "','" + CBB_tea_sex.Text.ToString() + "','" + CBB_tea_dept.Text.ToString() + "','" + Time_tea_birth.Value.ToString("yyyy年MM月d日") + "','" + CBB_tea_nation.Text.ToString() + "','" + CBB_tea_marry.Text.ToString() + "','" + CBB_tea_MCCP.Text.ToString() + "','" + TB_tea_phone.Text.ToString() + "','" + Time_tea_enter.Value.ToString("yyyy年MM月d日") + "','" + TB_tea_pay.Text.ToString() + "')";
int num = operate.OperateData(strsql);
operate.TeaSaveImages(this.TB_tea_ID.Text.Trim(), openFileDialog1);
//同时创建一个新的教师登录账户（密码默认为123456）
string time = DateTime.Now.ToString(); //获取当前系统事件字符串
string sql = "insert into wang_User values('" + TB_tea_ID.Text.ToString() + "','" + password + "','" + "教师" + "','" + time + "')";
operate.OperateData(sql); //更新数据库内容
if (num > 0)
{
MessageBox.Show("教师信息添加成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
}
}
catch (Exception)
{
MessageBox.Show("填写信息有误", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
//修改按钮
private void button1_Click(object sender, EventArgs e)
{
try
{
if (textBox1.Text.Trim() == "")
{
MessageBox.Show("请填写新密码", "警告", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
string strUpdateSql = "update wang_User set UserPwd='" + textBox1.Text + "' where UserName='******'";
operate.OperateData(strUpdateSql);
MessageBox.Show("修改密码成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();//关闭窗体
}
}
catch (Exception ex) //捕获异常
{
MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); //弹出消息对话框
}
}
//删除记录（将选中记录的登录事件重置为'2012/01/01 0:00:00'）
private void delete_Click(object sender, EventArgs e)
{
try
{
if (this.dataGridView1.SelectedCells.Count == 0)
{
MessageBox.Show("请选择要删除的数据！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
else
{
string user_name = dataGridView1.SelectedCells[0].Value.ToString(); //得到用户名
string delUser = "******" + user_name + "'";
operate.OperateData(delUser); //删除用户信息
operate.DeleUserInfo(user_name);
MessageBox.Show("删除成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch
{
MessageBox.Show("删除失败", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
DBOperate operate = new DBOperate();//创建操作数据库对象
//登录按钮的事件
private void btnlogin_Click(object sender, EventArgs e)
{
try
{
if (textname.Text == "" || textpassword.Text == "")//判断文本框内容
{
MessageBox.Show("用户名或密码不能为空！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return; //退出事件
}
else
{
string name = textname.Text.Trim();
string password = textpassword.Text.Trim();
string power = "";
if (Rbtnstu.Checked)
{
power = "学生";
}
if (rbtntea.Checked)
{
power = "教师";
}
if (rbtnmaster.Checked)
{
power = "管理员";
}
SqlConnection conn = PMSClass.DBConnection.MyConnection();//创建连接对象
conn.Open();
SqlCommand cmd = new SqlCommand("select UserName,UserPwd from wang_User where UserName='******' and UserPwd='" + password + "' and UserPower='" + power + "'", conn);
SqlDataReader sdr = cmd.ExecuteReader(); //得到数据库读取的对象
sdr.Read(); //读取一行数据
if (sdr.HasRows) //判断行是否包含数据
{
string time = DateTime.Now.ToString(); //获取当前系统事件字符串
string sql = "UPDATE wang_User SET LoginTime='" + time + "' WHERE UserName='******' and UserPwd='" + password + "'";
operate.OperateData(sql); //更新数据库内容
conn.Close();
this.Hide(); //隐藏当前窗体
//传值
FormMain Main = new FormMain(); //创建主窗体对象
FormMain.User = name.ToString();
Main.Logintime = time.ToString();
FormMain.Power = power.ToString();
Main.Show();//显示主窗体
}
else
{
textname.Text = ""; //清空用户名
textpassword.Text = ""; //清空密码
MessageBox.Show("用户名或密码错误！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
conn.Close();
}
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
}