private void deleteStudent()
{
try
{
if (!txtStudentId.Text.Trim().Equals(string.Empty))
{
DialogResult dialogResult = MessageBox.Show("Are you sure you want to delete?", "Warning", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
if (oStudentBL.DeleteStudent(txtStudentId.Text))
{
ClearControls();
LoadStudents();
MessageBox.Show("Record deleted successfully.!");
}
}
}
else
{
txtStudentId.Focus();
}
}
catch (Exception ex)
{
throw ex;
}
}
private void btnKaydet_Click(object sender, EventArgs e)
{
Student s = new Student();
foreach (DataRow item in dt.Rows)
{
switch (item.RowState)
{
case DataRowState.Added:
s.Name = item["Name"].ToString();
s.Surname = item["Surname"].ToString();
s.NationId = item["NationId"].ToString();
s.SchoolNumber = item["Schoolnumber"].ToString();
StudentBL.InsertStudent(s);
break;
case DataRowState.Deleted:
s.StudentId = Convert.ToInt32(item["StudentId", DataRowVersion.Original]);
StudentBL.DeleteStudent(s.StudentId);
break;
case DataRowState.Modified:
s.Name = item["Name"].ToString();
s.Surname = item["Surname"].ToString();
s.NationId = item["NationId"].ToString();
s.SchoolNumber = item["Schoolnumber"].ToString();
s.StudentId = Convert.ToInt32(item["StudentId"]);
StudentBL.UpdateStudent(s);
break;
default:
break;
}
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
try
{
if (txtStudentSearchId.Text == string.Empty && txtStudentSearchName.Text == string.Empty)
{
MessageBox.Show("You must retrieve a record first.", "Missing Information", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (MessageBox.Show("Are you sure you want to delete the current record?", "Warning",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
txtStudentSearchName.Focus();
return;
}
StudentBL stuBL = new StudentBL();
if (stuBL.DeleteStudent(stu.StudentId))
{
ClearData();
MessageBox.Show("Delete Successful");
}
else
{
string msg = string.Empty;
foreach (ValidationError error in stuBL.Errors)
{
msg += error.Description + Environment.NewLine;
}
MessageBox.Show(msg);
MessageBox.Show("Delete Failed");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public ActionResult DeleteConfirmed(int id)
{
_studentBl.DeleteStudent(id);
return(RedirectToAction("Index"));
}
public ActionResult <bool> DeleteStudent(int id)
{
bool result = studentBL.DeleteStudent(id);
return(result);
}