private void button1_Click(object sender, EventArgs e)
{
try
{
Student s = new Student();
s.set_FirstName(textBox5.Text);
s.set_LastName(textBox4.Text);
s.set_Registration_No(textBox1.Text);
s.set_Contact(textBox3.Text);
s.set_Email(textBox2.Text);
s.set_Status(comboBox1.Text);
if ((s.get_FirstName() == null) || (s.get_LastName() == null) || (s.get_Contact() == null) || (s.get_Registration_No() == null) || (s.get_Email() == null) || (s.get_Status() == null))
{
MessageBox.Show("Submssion is not allowed with null values");
}
else
{
string constr = "Data Source=DESKTOP-GP94IEM\\SQLEXPRESS;Initial Catalog=Projectb;Integrated Security=True";
SqlConnection c = new SqlConnection(constr);
c.Open();
string s2 = string.Format("SELECT LookupId FROM Lookup WHERE Category=@Category and Name =@Name");
SqlCommand a = new SqlCommand(s2, c);
a.Parameters.Add(new SqlParameter("@Category", "STUDENT_STATUS"));
a.Parameters.Add(new SqlParameter("@Name", this.comboBox1.Text));
int id = (int)a.ExecuteScalar();
int f = dataGridView1.CurrentCell.RowIndex;
string id4 = (string)(dataGridView1.Rows[f].Cells["RegistrationNumber"].Value);
//MessageBox.Show("Updating this entry");
string Reg = (string)(dataGridView1.Rows[f].Cells["RegistrationNumber"].Value);
string Reg_No = string.Format("SELECT Id FROM STUDENT WHERE RegistrationNumber=@RegistrationNumber");
SqlCommand o = new SqlCommand(Reg_No, c);
o.Parameters.Add(new SqlParameter("@RegistrationNumber", Reg));
int t = (int)o.ExecuteScalar();
string s1 = string.Format("UPDATE STUDENT SET FirstName=@FirstName, LastName=@LastName,Contact=@Contact,Email=@Email,RegistrationNumber=@RegistrationNumber,Status=@Status where Id=@Id");
//values('" + s.get_FirstName() + "', '" + s.get_LastName() + "','" + s.get_Contact() + "','" + s.get_Email() + "','" + s.get_Registration_No() + "','" + id + "')");
//string s1 = string.Format("INSERT INTO Student(FirstName,LastName,Contact,Email,RegistrationNumber,Status) values('{0}', '{1}', '{2}', '{3}', '{4}', '{5}')", s.get_FirstName(), s.get_LastName(), s.get_Contact(), s.get_Email(), s.get_Registration_No(), id);
List <SqlParameter> p = new List <SqlParameter>();
SqlCommand a2 = new SqlCommand(s1, c);
//GetExample(a2, p.ToArray());
a2.Parameters.Add(new SqlParameter("Id", t));
a2.Parameters.Add(new SqlParameter("@FirstName", SqlDbType.VarChar));
a2.Parameters["@FirstName"].Value = s.get_FirstName();
a2.Parameters.Add(new SqlParameter("@LastName", SqlDbType.VarChar));
a2.Parameters["@LastName"].Value = s.get_LastName();
a2.Parameters.Add(new SqlParameter("@Contact", SqlDbType.VarChar));
a2.Parameters["@Contact"].Value = s.get_Contact();
a2.Parameters.Add(new SqlParameter("@RegistrationNumber", SqlDbType.VarChar));
a2.Parameters["@RegistrationNumber"].Value = s.get_Registration_No();
a2.Parameters.Add(new SqlParameter("@Status", SqlDbType.VarChar));
a2.Parameters["@Status"].Value = id;
a2.Parameters.Add(new SqlParameter("@Email", SqlDbType.VarChar));
a2.Parameters["@Email"].Value = s.get_Email();
/**
* a2.Parameters.AddWithValue("@FirstName" , s.get_FirstName());
* a2.Parameters.AddWithValue("@LastName", s.get_LastName());
* a2.Parameters.AddWithValue("@ContactName", s.get_Contact());
* a2.Parameters.AddWithValue("@RegistrationNumber", s.get_Registration_No());
* a2.Parameters.AddWithValue("@Status", id);
* a2.Parameters.AddWithValue("@Email", s.get_Email());**/
//int rows = DatabaseConnection.getInstance().exectuteQuery(s1);
int rows = a2.ExecuteNonQuery();
if (rows != 0)
{
MessageBox.Show("Student Updated");
panel1.Hide();
StudentGrid m = new StudentGrid();
m.Show();
c.Close();
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}