public override bool delete(nurse item)
{
OleDbConnection connect = Medible.AquireConnection();
connect.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = connect;
string query = "NurseID = '" + item.NurseID.ToString() + "'";
cmd.CommandText = "SELECT * From Nurses where " + query;
OleDbDataReader reader = cmd.ExecuteReader();
bool exist = false;
while (reader.Read())
{
exist = reader.HasRows;
}
connect.Close();
if (!exist)
{
return(exist);
}
else
{
connect.Open();
cmd.Connection = connect;
cmd.CommandText = "Delete from Nurses where " + query;
cmd.ExecuteNonQuery();
connect.Close();
return(exist);
}
}
public override void insert(nurse item)
{
//source:https://www.youtube.com/channel/UCs6nmQViDpUw0nuIx9c_WvA
OleDbConnection connect = Medible.AquireConnection();
connect.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.Connection = connect;
string query = "('" + item.NurseID + "','" + item.NurseName + "','" + item.Rank.ToString() + "','" + item.WardID + "')";
cmd.CommandText = "INSERT into Nurses ( NurseID, NurseName, Rank, WardID ) values" + query;
cmd.ExecuteNonQuery();
connect.Close();
}
public virtual bool delete(nurse item)
{
bool exist = false;
return(exist);
}
public virtual void insert(nurse item)
{
}
private void pictureBox1_Click(object sender, EventArgs e)
{
try
{
if (NurseSelectionBox.SelectedIndex == 0)
{
try
{
int x = Int32.Parse(RankTextBox.Text);
if (x > 0 && x < 6)
{
nurse item = new nurse(IDTextBox.Text, NameTextBox.Text.ToString(), Int32.Parse(RankTextBox.Text), WardIDTextBox.Text.ToString());
string ID = IDTextBox.Text;
int IDlength = ID.Length;
if (IDlength == 4)
{
if (ID[0].ToString().Equals("N") && char.IsDigit(ID[1]) && char.IsDigit(ID[2]) && char.IsDigit(ID[3]))
{
string WardID = WardIDTextBox.Text;
int WardIDlength = WardID.Length;
if (WardIDlength == 4)
{
if (WardID[0].ToString().Equals("W") && char.IsDigit(WardID[1]) && char.IsDigit(WardID[2]) && char.IsDigit(WardID[3]))
{
int WardNo = Int32.Parse(WardID[3].ToString());
if (WardNo < 6 && WardNo > 0)
{
item.insert(item);
NameTextBox.Text = "";
RankTextBox.Text = "";
IDTextBox.Text = "";
WardIDTextBox.Text = "";
MessageBox.Show("Information successfully added");
}
else
{
MessageBox.Show("Please enter only Ward ID from 001 ~ 005");
}
}
else
{
MessageBox.Show("Invalid Ward ID format. (Format: N000)");
}
}
else
{
MessageBox.Show("WardID can only accept 4 characters");;
}
}
else
{
MessageBox.Show("Invalid Nurse ID format. (Format: N000)");
}
}
else
{
MessageBox.Show("NurseID can only accept 4 characters");
}
}
else
{
MessageBox.Show("Please insert an integer within 1-5 for the 'Rank' field");
}
}
catch
{
MessageBox.Show("The data either existed or did not follow proper format");
}
}
else if (NurseSelectionBox.SelectedIndex == 1)
{
nurse item = new nurse(IDTextBox.Text);
bool exist = item.delete(item);
switch (exist)
{
case true:
MessageBox.Show("Nurse deleted successfully");
break;
case false:
MessageBox.Show("Nurse not found or already deleted");
break;
}
}
}
catch
{
MessageBox.Show("Please fill in the fields correctly.");
}
}