我的代码是这样的：
public partial class TimeTableForm : Form
{
string text;
string t;
string day;
public TimeTableForm(string str, string element,string d)
{
InitializeComponent();
text = str;
t = element;
day = d;
}
private void TimeTableForm_FormClosing(object sender, FormClosingEventArgs e)
{
//timetableData.Dispose();
//this.Visible = false;
this.Dispose();
Application.Exit();
//SelectElementForm ob = new SelectElementForm();
//ob.Show();
//this.Close();
}
//to generate the time table
public void GenerateTimeTable()
{
if(t == "Classes")
{
LogFile file = new LogFile();
file.LoggingInfo("Class selected: "+text+" and day selected: "+day);
SqlConnection conn = new SqlConnection("Data Source=WONDERBIZ;Initial Catalog=School_TimeTable;Integrated Security=True");
conn.Open();
string query = "select p.periodTime,s.subjectName,tc.teacherName,cr.classRomId from tbl_timetable t"
+" join tbl_Days d on d.dayId = t.dayId"
+" join tbl_Periods p on p.periodId = t.periodId"
+" join tbl_Subjects s on s.subjectId = t.subjectId"
+" join tbl_teachers tc on tc.teacherId = t.teacherId"
+" join tbl_classes cl on cl.classId = t.classId"
+" join tbl_classrooms cr on cr.classRomId = t.classroomId"
+" where cl.className = '"+text+"'"
+" and d.dayName = '"+day+"'"
+" order by p.periodId asc;";
SqlCommand cmd = new SqlCommand(query, conn);
try
{
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//filling up the dataset
da.Fill(ds, "timetable data");
//showing the data
timetableData.DataSource = ds;
timetableData.DataMember = "timetable data";
conn.Close();
//ds.Clear();
}
catch(SqlException ex)
{
file.LoggingError(t + " timetable:" + ex.Message);
}
catch(Exception ex)
{
file.LoggingError(t+" timetable:" + ex);
}
ElementLabel.Text = "Class:";
SelectedElementLabel.Text = text;
dayLabel.Text = day;
}
if (t == "Teachers")
{
LogFile file = new LogFile();
file.LoggingInfo("Teacher selected: " + text + " and day selected: " + day);
SqlConnection conn = new SqlConnection("Data Source=WONDERBIZ;Initial Catalog=School_TimeTable;Integrated Security=True");
conn.Open();
string query = "select cl.className,p.periodTime,s.subjectName,cr.classRomId from tbl_timetable t"
+ " join tbl_Days d on d.dayId = t.dayId"
+ " join tbl_Periods p on p.periodId = t.periodId"
+ " join tbl_Subjects s on s.subjectId = t.subjectId"
+ " join tbl_teachers tc on tc.teacherId = t.teacherId"
+ " join tbl_classes cl on cl.classId = t.classId"
+ " join tbl_classrooms cr on cr.classRomId = t.classroomId"
+ " where tc.teacherName = '" + text + "'"
+ " and d.dayName = '" + day + "'"
+ " order by p.periodId asc;";
SqlCommand cmd = new SqlCommand(query, conn);
try
{
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//filling up the dataset
da.Fill(ds, "timetable data");
//showing the data
timetableData.DataSource = ds;
timetableData.DataMember = "timetable data";
conn.Close();
}
catch (SqlException ex)
{
file.LoggingError(t + " timetable:" + ex.Message);
}
catch (Exception ex)
{
file.LoggingError(t + " timetable:" + ex);
}
ElementLabel.Text = "Teacher:";
SelectedElementLabel.Text = text;
dayLabel.Text = day;
}
if (t == "Classrooms")
{
LogFile file = new LogFile();
file.LoggingInfo("Classroom selected: " + text + " and day selected: " + day);
SqlConnection conn = new SqlConnection("Data Source=WONDERBIZ;Initial Catalog=School_TimeTable;Integrated Security=True");
conn.Open();
string query = "select cl.className,p.periodTime,s.subjectName,tc.teacherName from tbl_timetable t"
+ " join tbl_Days d on d.dayId = t.dayId"
+ " join tbl_Periods p on p.periodId = t.periodId"
+ " join tbl_Subjects s on s.subjectId = t.subjectId"
+ " join tbl_teachers tc on tc.teacherId = t.teacherId"
+ " join tbl_classes cl on cl.classId = t.classId"
+ " join tbl_classrooms cr on cr.classRomId = t.classroomId"
+ " where cr.classRomId = '" + text + "'"
+ " and d.dayName = '" + day + "'"
+ " order by p.periodId asc;";
SqlCommand cmd = new SqlCommand(query, conn);
try
{
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
//filling up the dataset
da.Fill(ds, "timetable data");
//showing the data
timetableData.DataSource = ds;
timetableData.DataMember = "timetable data";
conn.Close();
}
catch (SqlException ex)
{
file.LoggingError(t + " timetable:" + ex.Message);
}
catch (Exception ex)
{
file.LoggingError(t + " timetable:" + ex);
}
ElementLabel.Text = "Classroom:";
SelectedElementLabel.Text = text;
dayLabel.Text = day;
}
}
private void TimeTableForm_Load(object sender, EventArgs e)
{
GenerateTimeTable();
}