public string TeacherWithLowerSuccessLevel()
{
double min = int.MaxValue;
int minIndex = 0;
var list = CountAverageInColumn();
for (int i = 0; i < list.Count; i++)
{
if (list[i] < min)
{
min = list[i];
minIndex = i;
}
}
var subjects = SelectDataFromDataBase.SelectSubjectList();
var linq = from subject in subjects
where subject.Value == _progressTableColumns[minIndex + 2]
select subject.Key;
var teacher = ExecuteQuery(true, "SELECT `name`, `surname` FROM `teachers` WHERE `subjectID`=@subject;",
new Dictionary <string, string>
{
{
"@subject",
linq.ToList()[0]
}
}, true);
return(teacher[0][0] + " " + teacher[0][1]);
}
private void UpdateAddTeacherComboboxes()
{
var container = SelectDataFromDataBase.SelectSubjectList();
Subject_comboBox.DisplayMember = "Subject";
Subject_comboBox.ValueMember = "Id";
var dataSource = new List <object>();
foreach (var pair in container)
{
dataSource.Add(new { Id = pair.Key, Subject = pair.Value });
}
Subject_comboBox.DataSource = dataSource;
container = SelectDataFromDataBase.SelectCabinetList();
Cabinet_comboBox.DisplayMember = "Cabinet";
Cabinet_comboBox.ValueMember = "Id";
dataSource = new List <object>();
foreach (var pair in container)
{
dataSource.Add(new { Id = pair.Key, Cabinet = pair.Value });
}
Cabinet_comboBox.DataSource = dataSource;
Subject_comboBox.SelectedItem = null;
Cabinet_comboBox.SelectedItem = null;
Subject_comboBox.Text = @"Choose subject";
Cabinet_comboBox.Text = @"Choose cabinet";
}
private void PrintTableWithJoinStatement()
{
var subjects = SelectDataFromDataBase.SelectSubjectList();
string qColumn = "";
foreach (var pair in subjects)
{
qColumn += $", `progress`.`{pair.Value}`";
}
TablePreview_dataGridView.DataSource = SelectDataFromDataBase.SelectAllFromTable(
$"SELECT `progress`.`id`, `pupils`.`name`, `pupils`.`surname`{qColumn} FROM `progress` INNER JOIN `pupils` ON `progress`.`pupilID` = `pupils`.`id`;",
FormColumnsList(subjects));
TablePreview_dataGridView.AutoResizeColumns();
TablePreview_dataGridView.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
TablePreview_dataGridView.Refresh();
}
private void PrepareSubjectCombobox()
{
var comboboxSource = SelectDataFromDataBase.SelectSubjectList();
// SelectSubject_comboBox.DisplayMember = "subject";
// SelectSubject_comboBox.ValueMember = "id";
var dataSource = new List <object>();
foreach (var list in comboboxSource)
{
dataSource.Add(list.Value); //new { id = list.Key, subject = list.Value });
}
SelectSubject_comboBox.DataSource = dataSource;
SelectSubject_comboBox.SelectedItem = null;
SelectSubject_comboBox.Text = @"Select subject";
}