private void button_LOGIN_Click(object sender, EventArgs e)
{
MY_DB db = new MY_DB();
STUDENT student = new STUDENT();
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
SqlCommand cmd = new SqlCommand("select * from Login", db.getConnection);
//cmd.Parameters.Add("@username", SqlDbType.VarChar).Value = txtUsername.Text;
//cmd.Parameters.Add("@password", SqlDbType.VarChar).Value = txtPassword.Text;
da.SelectCommand = cmd;
da.Fill(dt);
int count = dt.Rows.Count;
if (count > 0)
{
for (int i = 0; i < count; i++)
{
if (txtUsername.Text == dt.Rows[i]["username"].ToString() && txtPassword.Text == dt.Rows[i]["password"].ToString())
{
this.DialogResult = DialogResult.OK;
}
}
if (this.DialogResult != DialogResult.OK)
{
MessageBox.Show("Invalid Username or Password", "Login error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
private void ButtonRegister_Click(object sender, EventArgs e)
{
if (chkAdmin.Checked == true)
{
MY_DB db = new MY_DB();
SqlCommand cmm = new SqlCommand("select * from Login", db.getConnection);
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
da.SelectCommand = cmm;
da.Fill(dt);
int countRow = dt.Rows.Count;
SqlCommand cmd = new SqlCommand("insert into Login (id, username, password)" +
" values (@id, @user, @pass)", db.getConnection);
cmd.Parameters.Add("@id", SqlDbType.Int).Value = countRow;
cmd.Parameters.Add("@user", SqlDbType.VarChar).Value = txtUsername.Text;
cmd.Parameters.Add("@pass", SqlDbType.VarChar).Value = txtPassword.Text;
db.openConnection();
if (cmd.ExecuteNonQuery() == 1)
{
db.closeConnection();
}
else
{
db.closeConnection();
}
da.InsertCommand = cmd;
da.Update(dt);
MessageBox.Show("Sign up successful", "Adding...", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void buttonFind_Click(object sender, EventArgs e)
{
#region Tìm kiếm theo ID của Thầy
/*
* if (IsNumber(txtSearch.Text) == true)
* {
* int id = int.Parse(txtSearch.Text);
* SqlCommand cmd = new SqlCommand("select id, fname, lname, bdate, gender, phone, address, picture from Std where id = " + id);
* DataTable table = student.getStudents(cmd);
* if (table.Rows.Count >= 0)
* {
* TextBoxID.Text = table.Rows[0]["id"].ToString();
* TextBoxFname.Text = table.Rows[0]["fname"].ToString();
* TextBoxLname.Text = table.Rows[0]["lname"].ToString();
* DateTimePicker1.Value = (DateTime)table.Rows[0]["bdate"];
* if (table.Rows[0]["gender"].ToString() == "Female")
* {
* RadioButtonFemale.Checked = true;
* }
* else RadioButtonMale.Checked = true;
* TextBoxPhone.Text = table.Rows[0]["phone"].ToString();
* TextBoxAddress.Text = table.Rows[0]["address"].ToString();
* byte[] pic = (byte[])table.Rows[0]["picture"];
* MemoryStream picture = new MemoryStream(pic);
* PictureBoxStudentImage.Image = Image.FromStream(picture);
* MessageBox.Show("Not found", "Find Student", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
* }
* else MessageBox.Show("Not found", "Find Student", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
*
* }
* else
* {
* studentsListForm up = new studentsListForm();
* up.ShowDialog();
*
* }
*/
#endregion
MY_DB mydb = new MY_DB();
if (IsNumber(TextBoxSearch.Text)) //tìm kiếm theo ID
{
int id = int.Parse(TextBoxSearch.Text);
SqlCommand command = new SqlCommand("SELECT id, fname, lname, bdate, gender, phone, address, picture from Std where id = " + id + "or phone = " + id, mydb.getConnection);
//SqlCommand comand = new SqlCommand(query + id, db.GetConnection);
DataTable table = new DataTable();
SqlDataAdapter adapter = new SqlDataAdapter(command);
adapter.Fill(table);
if (table.Rows.Count > 0)
{
TextBoxID.Text = table.Rows[0]["id"].ToString();
TextBoxFname.Text = table.Rows[0]["fname"].ToString();
TextBoxLname.Text = table.Rows[0]["lname"].ToString();
DateTimePicker1.Value = (DateTime)table.Rows[0]["bdate"];
if (table.Rows[0]["gender"].ToString() == "Female")
{
RadioButtonFemale.Checked = true;
}
else
{
RadioButtonMale.Checked = true;
}
TextBoxPhone.Text = table.Rows[0]["phone"].ToString();
TextBoxAddress.Text = table.Rows[0]["address"].ToString();
byte[] pic = (byte[])table.Rows[0]["picture"];
MemoryStream picture = new MemoryStream(pic);
PictureBoxStudentImage.Image = Image.FromStream(picture);
}
else
{
MessageBox.Show("Not found", "Find Student", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
else //Tìm theo tên
{
SqlCommand command = new SqlCommand("SELECT * FROM Std WHERE fname = @name", mydb.getConnection);
command.Parameters.Add("@name", SqlDbType.VarChar).Value = TextBoxSearch.Text;
SqlDataAdapter da = new SqlDataAdapter(command);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
AdvancedSearch find = new AdvancedSearch();
find.DataGridView1.DataSource = student.getStudents(command);
find.DataGridView1.ReadOnly = true;
DataGridViewImageColumn picCol = new DataGridViewImageColumn();
find.DataGridView1.RowTemplate.Height = 90;
picCol = (DataGridViewImageColumn)find.DataGridView1.Columns[7];
picCol.ImageLayout = DataGridViewImageCellLayout.Zoom;
find.DataGridView1.AllowUserToAddRows = false;
find.Show();
}
else
{
MessageBox.Show("Not found", "Find Student", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
