void Button1Click(object sender, EventArgs e)
{
Koneksi sambung = new Koneksi();
try{
sambung.buka();
MessageBox.Show("Berhasil Koneksi Database", "Konfirmasi");
this.Hide();
FormOperationDML tampil = new FormOperationDML();
tampil.ShowDialog();
}
catch (MySqlException ex)
{
switch (ex.Number)
{
case 0:
{ MessageBox.Show("Koneksi Gagal", "Konfirmasi"); }
break;
case 1045:
{ MessageBox.Show("Username atau Password Salah", "Konfirmasi"); }
break;
}
}
}
void HapusClick(object sender, EventArgs e)
{
sambung = new Koneksi();
sql = "DELETE FROM mahasiswa where stb='" + stb.Text + "' ";
try{
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
query.ExecuteNonQuery();
MessageBox.Show("Data Berhasil Dihapus !!", "information");
bersihkan();
TampilDalamTable();
} catch (Exception er) {
MessageBox.Show(er.Message);
}
sambung.tutup();
}
public DataTable bacasemua()
{
sambung = new Koneksi();
sql = "Select * From Mahasiswa";
tabel = new DataTable();
try {
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
query.ExecuteNonQuery();
adapter.Fill(tabel);
} catch (Exception er) {
MessageBox.Show(er.Message);
}
sambung.tutup();
return(tabel);
}
public DataTable tampilpencarian(string cari)
{
sambung = new Koneksi();
sql = "SELECT * FROM mahasiswa where nama LIKE '%" + cari + "%'";
tabel = new DataTable();
try {
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
query.ExecuteNonQuery();
adapter.Fill(tabel);
} catch (Exception er) {
MessageBox.Show(er.Message);
}
sambung.tutup();
return(tabel);
}
void EditClick(object sender, EventArgs e)
{
sambung = new Koneksi();
sql = "UPDATE mahasiswa SET nama ='" + nama.Text + "', alamat ='" + alamat.Text + "', " +
"nilai_tugas=" + nt.Value + ", nilai_mid=" + nm.Value + ", " +
"nilai_final=" + nf.Value + ", nilai_akhir='" + na.Text + "', nilai_huruf='" + nh.Text + "', " +
"keterangan='" + keterangan.Text + "' where stb='" + stb.Text + "' ";
try {
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
query.ExecuteNonQuery();
MessageBox.Show("Data Berhasil Diubah !!", "information");
TampilDalamTable();
} catch (Exception er) {
MessageBox.Show(er.Message);
}
sambung.tutup();
}
void StbKeyPress(object sender, KeyPressEventArgs e)
{
sambung = new Koneksi();
if (e.KeyChar == (char)Keys.Enter)
{
sql = "SELECT * FROM mahasiswa where stb='" + stb.Text + "' ";
try{
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
// dr = new MySqlDataReader();
dr = query.ExecuteReader();
if (dr.Read())
{
MessageBox.Show("Data Sudah Ada", "information");
simpan.Enabled = false;
edit.Enabled = true;
hapus.Enabled = true;
nama.Text = dr[2].ToString();
alamat.Text = dr[3].ToString();
nt.Value = Convert.ToInt32(dr[4]);
nm.Value = Convert.ToInt32(dr[5]);
nf.Value = Convert.ToInt32(dr[6]);
na.Text = dr[7].ToString();
nh.Text = dr[8].ToString();
keterangan.Text = dr[9].ToString();
}
else
{
simpan.Enabled = true;
nama.Select();
}
sambung.tutup();
} catch (Exception er) {
MessageBox.Show(er.Message);
}
}
}
void SimpanClick(object sender, EventArgs e)
{
sambung = new Koneksi();
sql = "INSERT INTO mahasiswa (stb, nama, alamat, nilai_tugas, nilai_mid, nilai_final, nilai_akhir, " +
"nilai_huruf, keterangan) " +
"VALUES ('" + stb.Text + "', '" + nama.Text + "', '" + alamat.Text + "', " + nt.Value + ", " + nm.Value + ", " + nf.Value + ", '" + na.Text + "', '" + nh.Text + "', " +
"'" + keterangan.Text + "')";
try{
sambung.buka();
query = new MySqlCommand(sql, sambung.koneksi);
adapter = new MySqlDataAdapter(query);
query.ExecuteNonQuery();
MessageBox.Show("Data Berhasil Disimpan !!", "information");
bersihkan();
TampilDalamTable();
} catch (Exception er) {
MessageBox.Show(er.Message);
}
sambung.tutup();
}