private void addnewdoc_Click(object sender, EventArgs e)
{
if (ID_Textbox.Text.Length == 0 || Name_TextBox.Text.Length == 0 || Speciality_TextBox.Text.Length == 0)
{
MessageBox.Show("Wrong Entry");
}
else
{
dc doctor = new dc();
doctor.id = ID_Textbox.Text;
doctor.name = Name_TextBox.Text;
doctor.specialty = Speciality_TextBox.Text;
string record = "";
int rec_len;
byte[] record_b;
record += doctor.id + "*" + doctor.name + "*" + doctor.specialty;
rec_len = record.Length;
record_b = new byte[rec_len];
FileStream Doctor_File = new FileStream("doctor.txt", FileMode.Append);
for (int i = 0; i < rec_len; i++)
{
record_b[i] = (byte)record[i];
}
Doctor_File.WriteByte((byte)rec_len);
Doctor_File.Write(record_b, 0, rec_len);
Doctor_File.Close();
ID_Textbox.Text = "";
Name_TextBox.Text = "";
Speciality_TextBox.Text = "";
MessageBox.Show("done");
}
}
private void searchbyname_Click(object sender, EventArgs e)
{
string record;
bool Doctor_Exist = false;
string doctorid = "";
int rec_len;
byte[] record_b;
//open file
FileStream Doctor_File = new FileStream("doctor.txt", FileMode.Open);
string[] fields;
//search by doctor name
while (Doctor_File.Position != Doctor_File.Length)
{
dc doc = new dc();
rec_len = Doctor_File.ReadByte();
record_b = new byte[rec_len];
record = "";
Doctor_File.Read(record_b, 0, rec_len);
for (int i = 0; i < rec_len; i++)
{
record += (char)record_b[i];
}
fields = record.Split('*');
doc.id = fields[0];
doc.name = fields[1];
doc.specialty = fields[2];
if (doc.name == Doctor_TextBox.Text)
{
doctorid = doc.id;
Doctor_Exist = true;
break;
}
}
if (!Doctor_Exist)
{
MessageBox.Show("Doctor not Found");
}
Doctor_File.Close();
//making table
DataTable Table = new DataTable();
Table.Columns.Add("ID", typeof(string));
Table.Columns.Add("Patient Name", typeof(string));
Table.Columns.Add("Disease", typeof(string));
Table.Columns.Add("Doctor's ID", typeof(string));
Table.Columns.Add("Appointment Date", typeof(string));
//open file patient
FileStream Patient_File = new FileStream("Patient.txt", FileMode.Open);
string[] pat_field;
//display patient by doctor name
while (Patient_File.Position != Patient_File.Length)
{
patient patien = new patient();
rec_len = Patient_File.ReadByte();
record_b = new byte[rec_len];
record = "";
Patient_File.Read(record_b, 0, rec_len);
for (int i = 0; i < rec_len; i++)
{
record += (char)record_b[i];
}
pat_field = record.Split('@');
patien.id = pat_field[0];
patien.name = pat_field[1];
patien.disease = pat_field[2];
patien.doctor_id = pat_field[3];
patien.appointment_date = pat_field[4];
if (patien.doctor_id == doctorid)
{
Table.Rows.Add(patien.id, patien.name, patien.disease, patien.doctor_id, patien.appointment_date);
}
}
data_findbyname.DataSource = Table;
Patient_File.Close();
}