private void 确定_Click(object sender, EventArgs e)
{
sqlConnect cc = new sqlConnect();
if (dataGridView1.Rows.Count == 1)
{
Close();
return;
}
string sql = "";
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
string sql2 = "insert into 课程hjh(课程编号hjh,课程名称hjh,学院编号hjh,考核方式hjh,学时hjh,学分hjh,课程介绍hjh) values( ";
for (int j = 0; j < dataGridView1.Columns.Count - 1; j++) //dataGridView1.Columns.Count-1
{
sql2 += "'" + dataGridView1.Rows[i].Cells[j].Value.ToString().Trim() + "',";
}
sql2 += "'" + dataGridView1.Rows[i].Cells[dataGridView1.Columns.Count - 1].Value.ToString().Trim() + "');";
sql += sql2;
}
try
{
cc.ExecuteNonQuery(sql);
MessageBox.Show("添加成功！");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
Close();
}
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox5.Text == "")
{
MessageBox.Show("开课编号不能为空！");
return;
}
if (textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "")
{
MessageBox.Show("信息不足，不可添加！");
return;
}
string sql = "select * from 开课hjh where 开课编号hjh = '" + textBox5.Text + "'";
sqlConnect cc = new sqlConnect();
DataSet ds = cc.GetDataSet(sql);
if (ds.Tables[0].Rows.Count != 0)
{
MessageBox.Show("已经存在该开课编号！");
return;
}
ds.Clear();
string sql2 = "select * from 开课hjh where 班级编号hjh = '" + textBox2.Text + "' " +
" and 课程编号hjh = '" + textBox1.Text + "'";
ds = cc.GetDataSet(sql2);
if (ds.Tables[0].Rows.Count != 0)
{
MessageBox.Show("发现该班级已经开设此课程！不能重复添加！");
return;
}
string[] row = { textBox5.Text, textBox1.Text, textBox2.Text, textBox3.Text, textBox4.Text };
dataGridView1.Rows.Add(row);
}
private void StudentGradeResult_Load(object sender, EventArgs e)
{
label18.Text = this.jidian.ToString();
label19.Text = this.unpassed.ToString();
label20.Text = this.excellent.ToString();
string sql =
"select b.学生编号hjh,sum((g.成绩hjh-50)*h.学分hjh)/(SUM(h.学分hjh)*10) '绩点hjh'" +
" from 学生hjh b,班级hjh c,开设hjh e,开课hjh f,选修hjh g,课程hjh h,教师hjh i " +
" where " +
" b.班级编号hjh = c.班级编号hjh and c.专业编号hjh = e.专业编号hjh ";
if (this.type == "学期")
{
sql += " and e.开课学期hjh = '" + kk + "' ";
}
else if (this.type == "学年")
{
sql += " and e.开课学期hjh like '" + kk + "%' ";
}
sql += " and e.课程编号hjh = f.课程编号hjh and b.班级编号hjh = f.班级编号hjh " +
" and g.开课编号hjh = f.开课编号hjh and g.学生编号hjh = b.学生编号hjh " +
" and f.课程编号hjh = h.课程编号hjh and f.教师编号hjh = i.教师编号hjh " +
" and b.班级编号hjh = ( " +
" select b.班级编号hjh " +
" from 学生hjh a,班级hjh b " +
" where a.学生编号hjh = '" + this.num + "' and a.班级编号hjh = b.班级编号hjh ) " +
" group by b.学生编号hjh,g.成绩hjh " +
" having (g.成绩hjh >=60 and sum((g.成绩hjh-50)*h.学分hjh)/(SUM(h.学分hjh)*10) >" + this.jidian + ") ";
string sql2 =
"select b.学生编号hjh,sum((g.成绩hjh-50)*h.学分hjh)/(SUM(h.学分hjh)*10) '绩点hjh'" +
" from 学生hjh b,班级hjh c,开设hjh e,开课hjh f,选修hjh g,课程hjh h,教师hjh i " +
" where " +
" b.班级编号hjh = c.班级编号hjh and c.专业编号hjh = e.专业编号hjh ";
if (this.type == "学期")
{
sql2 += " and e.开课学期hjh = '" + kk + "' ";
}
else if (this.type == "学年")
{
sql2 += " and e.开课学期hjh like '" + kk + "%' ";
}
sql2 += " and e.课程编号hjh = f.课程编号hjh and b.班级编号hjh = f.班级编号hjh " +
" and g.开课编号hjh = f.开课编号hjh and g.学生编号hjh = b.学生编号hjh " +
" and f.课程编号hjh = h.课程编号hjh and f.教师编号hjh = i.教师编号hjh " +
" and c.专业编号hjh = ( " +
" select b.专业编号hjh " +
" from 学生hjh a,班级hjh b " +
" where a.学生编号hjh = '" + this.num + "' and a.班级编号hjh = b.班级编号hjh ) " +
" group by b.学生编号hjh,g.成绩hjh " +
" having (g.成绩hjh >=60 and sum((g.成绩hjh-50)*h.学分hjh)/(SUM(h.学分hjh)*10) >" + this.jidian + ") ";
sqlConnect cc = new sqlConnect();
try
{
DataSet ds = cc.GetDataSet(sql);
DataSet ds2 = cc.GetDataSet(sql2);
MessageBox.Show(ds.Tables[0].Rows.Count.ToString());
label21.Text = (ds.Tables[0].Rows.Count + 1).ToString();
label22.Text = (ds2.Tables[0].Rows.Count + 1).ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
}
}
private void button1_Click(object sender, EventArgs e)
{
sqlConnect cc = new sqlConnect();
string sql = "update 学生hjh set ";
int flag = 0;
if (comboBox1.Text != dgvr.Cells[3].Value.ToString().Trim() ||
textBox5.Text != dgvr.Cells[4].Value.ToString().Trim() ||
textBox6.Text != dgvr.Cells[5].Value.ToString().Trim()
)
{
string sql2 = "select 班级编号hjh from 学院hjh a, 专业hjh b ,班级hjh c where " +
" a.学院名称hjh = '" + comboBox1.Text + "' and " +
" b.专业名称hjh = '" + textBox5.Text + "' and " +
" c.班级序号hjh = " + textBox6.Text + " and " +
" a.学院编号hjh = b.学院编号hjh and " +
" b.专业编号hjh = c.专业编号hjh";
try
{
DataSet ds = cc.GetDataSet(sql2);
if (ds.Tables[0].Rows.Count == 0)
{
MessageBox.Show("找到该学生的班级编号，学院、专业、或班级信息有误！");
return;
}
string str = ds.Tables[0].Rows[0].ItemArray[0].ToString().Trim();
ds.Dispose();
sql += "班级编号hjh = '" + str + "' ";
flag = 1;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally { }
}
if (textBox2.Text != dgvr.Cells[1].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "姓名hjh = '" + textBox2.Text + "'";
flag = 1;
}
if (textBox3.Text != dgvr.Cells[2].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "性别hjh = '" + textBox3.Text + "'";
flag = 1;
}
if (textBox7.Text != dgvr.Cells[6].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "出生年月hjh = '" + textBox7.Text + "'";
flag = 1;
}
if (textBox8.Text != dgvr.Cells[7].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "联系电话hjh = '" + textBox8.Text + "'";
flag = 1;
}
if (textBox9.Text != dgvr.Cells[8].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "已修学分hjh = " + textBox9.Text;
flag = 1;
}
if (textBox10.Text != dgvr.Cells[9].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "平均绩点hjh = " + textBox10.Text;
flag = 1;
}
if (textBox11.Text != dgvr.Cells[10].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "生源地hjh = '" + textBox11.Text + "'";
flag = 1;
}
if (textBox12.Text != dgvr.Cells[11].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "权限级别hjh = " + textBox12.Text;
flag = 1;
}
sql += " where 学生编号hjh = '" + label13.Text + "'";
try
{
if (flag == 1)
{
cc.ExecuteNonQuery(sql);
MessageBox.Show("修改成功！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
this.Close();
}
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text == "")
{
MessageBox.Show("课程号不能为空！");
return;
}
if (textBox2.Text == "")
{
MessageBox.Show("课程名称不能为空！");
return;
}
sqlConnect cc = new sqlConnect();
string sql = "select * from 课程hjh where 课程编号hjh = '" + textBox1.Text + "'";
DataSet ds = cc.GetDataSet(sql);
if (ds.Tables[0].Rows.Count != 0)
{
MessageBox.Show("对不起，课程号已经存在！");
return;
}
ds.Dispose();
if (comboBox1.Text == " ------选择------")
{
MessageBox.Show("请选择开课学院！");
return;
}
if (comboBox2.Text == " ----选择----")
{
comboBox2.Text = "";
}
if (comboBox3.Text == " ----选择----")
{
comboBox3.Text = "";
}
string sql2 = "select * from 学院hjh where 学院名称hjh = '" + comboBox1.Text + "'";
ds = cc.GetDataSet(sql2);
if (ds.Tables[0].Rows.Count == 0)
{
MessageBox.Show("未能到该学院名称的学院编号，学院信息有误！");
return;
}
comboBox1.Text = ds.Tables[0].Rows[0].ItemArray[0].ToString().Trim();
ds.Dispose();
string str = "";
if (radioButton1.Checked)
{
str = radioButton1.Text;
}
else
{
str = radioButton2.Text;
}
string[] row = { textBox1.Text, textBox2.Text, comboBox1.Text, str,
comboBox2.Text, comboBox3.Text, textBox4.Text };
dr.Rows.Add(row);
Close();
}
private void button1_Click(object sender, EventArgs e)
{
string tp = comboBox1.Text;
string num = textBox1.Text;
string pwd = textBox2.Text;
if (tp != "教师" && tp != "学生" && tp != "系统管理员")
{
MessageBox.Show("请选择登录身份！");
return;
}
if (num == "")
{
MessageBox.Show("用户名不能为空！");
return;
}
if (pwd == "")
{
MessageBox.Show("请输入密码！");
return;
}
string strSQL = "";
if (tp == "系统管理员")
{
strSQL += "select * from 系统管理员hjh where '" + num + "' = 用户名hjh and 登录密码hjh = '" + pwd + "'";
}
else
{
strSQL += "select * from " + tp + "hjh where '" + num + "' = " + tp + "编号hjh and 登录密码hjh = '" + pwd + "'";
}
sqlConnect cc = new sqlConnect();
DataSet dataset = new DataSet();
try
{
dataset = cc.GetDataSet(strSQL);
if (dataset.Tables[0].Rows.Count == 0)
{
MessageBox.Show("密码错误，请重新登录！");
return;
}
DataRow dr = dataset.Tables[0].Rows[0];
if (dr["权限级别hjh"].ToString() == "1")
{
StudentMain frm = new StudentMain(tp, num);
frm.Show();
}
else if (dr["权限级别hjh"].ToString() == "2")
{
TeacherMain frm2 = new TeacherMain(tp, num);
frm2.Show();
}
else if (dr["权限级别hjh"].ToString() == "5")
{
SystemManage frm3 = new SystemManage(tp, num);
frm3.Show();
}
this.Hide();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
dataset.Dispose();
}
}
private void button1_Click(object sender, EventArgs e)
{
sqlConnect cc = new sqlConnect();
string sql = "update 教师hjh set ";
int flag = 0;
if (comboBox1.Text != dgvr.Cells[3].Value.ToString().Trim())
{
string sql2 = "select * from 学院hjh where 学院名称hjh = '" + comboBox1.Text + "'";
DataSet ds = cc.GetDataSet(sql2);
if (ds.Tables[0].Rows.Count == 0)
{
MessageBox.Show("未能到该学院名称的学院编号，学院信息有误！");
return;
}
string str = ds.Tables[0].Rows[0].ItemArray[0].ToString().Trim();
ds.Dispose();
sql += "学院编号hjh = '" + str + "' ";
flag = 1;
}
if (textBox2.Text != dgvr.Cells[1].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "姓名hjh = '" + textBox2.Text + "'";
flag = 1;
}
if (textBox3.Text != dgvr.Cells[2].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "性别hjh = '" + textBox3.Text + "'";
flag = 1;
}
if (textBox5.Text != dgvr.Cells[4].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "出生年月hjh = '" + textBox5.Text + "'";
flag = 1;
}
if (textBox6.Text != dgvr.Cells[5].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "学历hjh = '" + textBox6.Text + "'";
flag = 1;
}
if (textBox7.Text != dgvr.Cells[6].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "职称hjh = '" + textBox7.Text + "'";
flag = 1;
}
if (textBox8.Text != dgvr.Cells[7].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "电子邮箱hjh = '" + textBox8.Text + "'";
flag = 1;
}
if (textBox9.Text != dgvr.Cells[8].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "联系电话hjh = '" + textBox9.Text + "'";
flag = 1;
}
if (textBox10.Text != dgvr.Cells[9].Value.ToString().Trim())
{
if (flag == 1)
{
sql += ",";
}
sql += "权限级别hjh = " + textBox10.Text;
flag = 1;
}
sql += " where 教师编号hjh = '" + label11.Text + "'";
try
{
if (flag == 1)
{
cc.ExecuteNonQuery(sql);
MessageBox.Show("修改成功！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
this.Close();
}
}
private void button1_Click(object sender, EventArgs e)
{
sqlConnect cc = new sqlConnect();
string sql = " select h.课程名称hjh,i.姓名hjh '授课教师hjh',h.学分hjh,h.考核方式hjh,e.开课学期hjh,g.成绩hjh " +
" from 学生hjh b,班级hjh c,开设hjh e,开课hjh f,选修hjh g,课程hjh h,教师hjh i " +
" where b.学生编号hjh = '" + this.num + "' " +
" and b.班级编号hjh = c.班级编号hjh and c.专业编号hjh = e.专业编号hjh " +
" and e.课程编号hjh = f.课程编号hjh and b.班级编号hjh = f.班级编号hjh " +
" and g.开课编号hjh = f.开课编号hjh and g.学生编号hjh = b.学生编号hjh " +
" and f.课程编号hjh = h.课程编号hjh and f.教师编号hjh = i.教师编号hjh ";
if (checkBox1.Checked)
{
sql += " and g.成绩hjh >=0 ";
}
if (comboBox1.Text.ToString().Trim() != "*")
{
sql += " and e.开课学期hjh = '" + comboBox1.Text.ToString().Trim() + "' ";
}
try
{
cc.BindDataGridView(dataGridView1, sql);
dataGridView1.Columns[0].ReadOnly = true;
dataGridView1.Columns[1].ReadOnly = true;
dataGridView1.Columns[2].ReadOnly = true;
dataGridView1.Columns[3].ReadOnly = true;
dataGridView1.Columns[4].ReadOnly = true;
dataGridView1.Columns[5].ReadOnly = true;
double total = 0;
int CourseNum = 0;
int totalCredit = 0;
int excellent = 0;
int unPassed = 0;
for (int i = 0; i < dataGridView1.RowCount - 1; i++)
{
int tmp = int.Parse(dataGridView1.Rows[i].Cells["成绩hjh"].Value.ToString());
if (tmp <= 0)
{
continue;
}
int credit = int.Parse(dataGridView1.Rows[i].Cells["学分hjh"].Value.ToString());
CourseNum++;
if (tmp < 60)
{
unPassed++;
}
if (tmp >= 95)
{
excellent++;
}
total += (double)(tmp - 50) * credit;
totalCredit += credit;
}
total = total / (totalCredit * 10);
StudentGradeResult frm = new StudentGradeResult(this.num, total, unPassed, excellent, comboBox1.Text.ToString().Trim(), "学期");
frm.ShowDialog();
frm.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
}
}
private void button21_Click(object sender, EventArgs e)
{
sqlConnect cc = new sqlConnect();
if (comboBox10.SelectedValue == null || comboBox10.DisplayMember == null)
{
MessageBox.Show("请选择一个班级！");
return;
}
string sql = "select 开课编号hjh from 开课hjh where 班级编号hjh = '" + comboBox10.SelectedValue.ToString().Trim() + "'";
DataSet ds = cc.GetDataSet(sql);
sql = "select 学生编号hjh from 学生hjh where 班级编号hjh = '" + comboBox10.SelectedValue.ToString().Trim() + "'";
DataSet ds2 = cc.GetDataSet(sql);
int synNum = 0;
foreach (DataRow dr in ds.Tables[0].Rows)
{
foreach (DataRow dr2 in ds2.Tables[0].Rows)
{
string sql2 = "select * from 选修hjh where 开课编号hjh = '" + dr[0].ToString() + "' and " +
"学生编号hjh = '" + dr2[0].ToString() + "'";
DataSet ds3 = cc.GetDataSet(sql2);
if (ds3.Tables[0].Rows.Count == 0)
{
synNum++;
if (synNum == 1)
{
DataGridViewTextBoxColumn col1 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col2 = new DataGridViewTextBoxColumn();
col1.Name = "开课编号hjh";
col1.HeaderText = "开课编号hjh";
col2.Name = "学生编号hjh";
col2.HeaderText = "学生编号hjh";
dataGridView1.Columns.Clear();
dataGridView1.DataSource = null;
dataGridView1.Columns.Add(col1);
dataGridView1.Columns.Add(col2);
}
sql += " insert into 选修hjh(开课编号hjh,学生编号hjh) values( '" + dr[0].ToString() + "','" + dr2[0].ToString() + "' );";
string[] row = { dr[0].ToString(), dr2[0].ToString() };
dataGridView1.Rows.Add(row);
}
ds3.Dispose();
}
}
try
{
if (synNum != 0)
{
cc.ExecuteNonQuery(sql);
MessageBox.Show("共同步" + synNum.ToString() + "条记录！");
}
else
{
MessageBox.Show("无需再次同步，该班级同学选修情况已经全部与班级开课同步！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
}
}
private void NewClassCourse_Load(object sender, EventArgs e)
{
DataGridViewTextBoxColumn col1 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col2 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col3 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col4 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col5 = new DataGridViewTextBoxColumn();
DataGridViewTextBoxColumn col6 = new DataGridViewTextBoxColumn();
col1.Name = "开课编号hjh";
col1.HeaderText = "开课编号hjh";
col2.Name = "课程编号hjh";
col2.HeaderText = "课程编号hjh";
col3.Name = "班级编号hjh";
col3.HeaderText = "班级编号hjh";
col4.Name = "教师编号hjh";
col4.HeaderText = "教师编号hjh";
col5.Name = "上课时间地点hjh";
col5.HeaderText = "上课时间地点hjh";
dataGridView1.Columns.Add(col1);
dataGridView1.Columns.Add(col2);
dataGridView1.Columns.Add(col3);
dataGridView1.Columns.Add(col4);
dataGridView1.Columns.Add(col5);
sqlConnect cc = new sqlConnect();
try
{
string sql = "select * from 学院hjh";
SqlDataAdapter da = new SqlDataAdapter(sql, cc.conn);
DataSet ds = new DataSet();
da.Fill(ds, "学院hjh");
comboBox1.ValueMember = "学院hjh.学院编号hjh";
comboBox1.DataSource = ds;
comboBox1.DisplayMember = "学院hjh.学院名称hjh";
sql = "select * from 课程hjh ";
SqlDataAdapter da2 = new SqlDataAdapter(sql, cc.conn);
da2.Fill(ds, "课程hjh");
comboBox4.ValueMember = "课程hjh.课程编号hjh";
comboBox4.DataSource = ds;
comboBox4.DisplayMember = "课程hjh.课程名称hjh";
sql = "select * from 教师hjh ";
SqlDataAdapter da3 = new SqlDataAdapter(sql, cc.conn);
da3.Fill(ds, "教师hjh");
comboBox5.ValueMember = "教师hjh.教师编号hjh";
comboBox5.DataSource = ds;
comboBox5.DisplayMember = "教师hjh.姓名hjh";
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
cc.closeConnect();
}
}
