This Project was Created For My Diploma Course @ Esoft Metro Campus . I Think This Document Will Help You To Understand Behavior of DiTec Course. Author: Kasun Madhusanka

1. DiTec Esoft C# Project Free
DiTec Project Esoft (C#)
Cource: Diploma in Information Technology With E commerce
Obtained Grade B For This Project
Do not direct copy form this project. This project was uploaded to enhance your IT
knowledge.I think this project may be very helpful to understand procedure of C# project
for DiTEC.

4. Welcome Start & Window
Enter Button
private void BtnEnter_Click(object sender, EventArgs e)
{
FrmWelcome fr = new FrmWelcome();
fr.Show();
this.Hide();

5. }
Exit Button
private void BtnExit_Click(object sender, EventArgs e)
{
DialogResult d1;
d1 = MessageBox.Show("Are You Sure Do You Want To Exit
?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
if (d1.ToString() == "Yes")
{
Application.Exit();
}
}
Welcome & Loading Window
Timer control
private void timer1_Tick(object sender, EventArgs e)
{
if (progressBar1.Value < 100)
{
progressBar1.Value = progressBar1.Value + 2;
}
else
{
timer1.Enabled=false;
FrmUser fr = new FrmUser();
fr.Show();
this.Hide();
}
Timer Properties

6. Login Window
Submit Button
string username = "kasun";
string password = "8620";
private void button1_Click(object sender, EventArgs e)
{
if (TxtUsername.Text == username && TxtPassword.Text == password)
{
DialogResult m2;
m2 = MessageBox.Show("Thank
You!", "Sucsess",MessageBoxButtons.OK, MessageBoxIcon.Information);
if (m2.ToString() == "OK")
{
MDISystem md1 = new MDISystem();
md1.Show();
this.Hide();
}
}

7. else
{
DialogResult m2;
m2 = MessageBox.Show("Incorrect Username & Password
","Error!", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error);
if (m2.ToString() == "Retry")
{
TxtUsername.Clear();
TxtPassword.Clear();
TxtUsername.Focus();
Clear Button
TxtUsername.Text = "";
TxtPassword.Text = "";
TxtUsername.Focus();
Exit Button
DialogResult d1;
d1 = MessageBox.Show("Are You Sure Do You Want To Exit
?","Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
if (d1.ToString() == "Yes")
{
Application.Exit();
}
MDI Window (Inside Menu Bar)
Appointment Details Window
FrmAppoinment_Details frm = new FrmAppoinment_Details();
frm.MdiParent = this;
frm.Show();
Medical Details Window
FrmMedical_Detals frm= new FrmMedical_Detals();
frm.MdiParent = this;
frm.Show();
Patient Details Window
FrmPatient_Details frm = new FrmPatient_Details();
frm.MdiParent = this;
frm.Show();
Doctor Details Window

8. FrmDoctor frm = new FrmDoctor();
frm.MdiParent = this;
frm.Show();
Medical Packages Window
FrmDoctor frm = new FrmDoctor();
frm.MdiParent = this;
frm.Show();
Help Window
FrmHelp frm = new FrmHelp();
frm.MdiParent = this;
frm.Show();
Author Window
FrmAuthor frm = new FrmAuthor();
frm.MdiParent = this;
frm.Show();
Appointment Details Window
Add Button
string connectionstring,commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring="INSERT INTO app
VALUES('"+CboRef.Text+"','"+txtpatname.Text+"','"+txtcontact.Text+"','"+txtad
dress.Text+"','"+cbogender.Text+"','"+comboBox1.Text+"','"+txtamount.Text+"')
";
MessageBox.Show("OK","Add Data ?",MessageBoxButtons.OK,MessageBoxIcon.Error);
OleDbConnection conn=new OleDbConnection(connectionstring);
OleDbCommand comm=new OleDbCommand(commandstring,conn);

9. conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Click OK","Data Added Successfully",MessageBoxButtons.OK);
conn.Close();
Search Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM app WHERE rn='" + CboRef.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader=null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("Completed !"); }
reader = comm.ExecuteReader();
while (reader.Read())
{
txtpatname.Text = reader[1].ToString();
txtcontact.Text = reader[2].ToString();
txtaddress.Text = reader[3].ToString();
cbogender.Text = reader[4].ToString();
comboBox1.Text = reader[5].ToString();
txtamount.Text = reader[6].ToString();
}
reader.Close();
Update Button
String connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "UPDATE app SET rn='" + CboRef.Text +"',pn='" +
txtpatname.Text + "',co='" + txtcontact.Text + "',ad='" + txtaddress.Text
+ "',gn='" + cbogender.Text + "',pt='" + comboBox1.Text + "',am='" +
txtamount.Text + "'";
MessageBox.Show("Are u Sure", "Do You Want Update
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Success", "Data Added
Sucsessfully!",MessageBoxButtons.OK, MessageBoxIcon.Error);
conn.Close();
Clear Button
CboRef.Text = "";
txtpatname.Text = "";

10. txtcontact.Text = "";
txtaddress.Text = "";
cbogender.Text = "";
comboBox1.Text = "";
txtamount.Text = "";
Delete Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "DELETE*FROM app WHERE rn='"+CboRef.Text+ "'";
if (MessageBox.Show("Are You Sure Do You Want Delete This Record
?", "Sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
== DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
CboRef.Text = "";
txtpatname.Clear();
txtcontact.Clear();
txtaddress.Clear();
cbogender.Text = "";
comboBox1.Text = "";
txtamount.Clear();
conn.Close();
Exit Button
this.Hide();
Medical Details Window

11. Add Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "INSERT INTO medical VALUES('" + comboBox1.Text
+ "','" + textBox3.Text + "','" + textBox2.Text +"','" + textBox1.Text
+ "','" + comboBox2.Text + "')";
MessageBox.Show("OK", "Add Data
?", MessageBoxButtons.OK,MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Click OK", "Data Added
Successfully",MessageBoxButtons.OK);
conn.Close();
Search Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM medical WHERE pno='" +
comboBox1.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("Completed !"); }
reader = comm.ExecuteReader();

12. while (reader.Read())
{
textBox3.Text = reader[1].ToString();
textBox2.Text = reader[2].ToString();
textBox1.Text = reader[3].ToString();
comboBox2.Text = reader[4].ToString();
}
reader.Close();
Update Button
String connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "UPDATE medical SET pno='" + comboBox1.Text
+ "',pn='" + textBox3.Text + "',q='" + textBox2.Text +"',pp='" +
textBox1.Text + "',de='" + comboBox2.Text + "'";
MessageBox.Show("Are u Sure", "Do You Want Update
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Success", "Data Added
Sucsessfully!",MessageBoxButtons.OK, MessageBoxIcon.Error);
conn.Close();
Clear Button
comboBox1.Text = "";
textBox3.Text = "";
textBox2.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
Delete Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "DELETE*FROM medical WHERE pno='" +
comboBox1.Text + "'";
if (MessageBox.Show("Are You Sure Do You Want Delete This Record
?", "Sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
== DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();

13. comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
textBox3.Clear();
textBox2.Clear();
textBox1.Clear();
comboBox2.Text = "";
comboBox1.Text = "";
conn.Close();
Exit Button
this.Hide();
Patient Details Window
Add Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "INSERT INTO patient VALUES('" + comboBox1.Text
+ "','" + textBox1.Text + "','" + comboBox2.Text +"','" + textBox2.Text
+ "','" + textBox3.Text + "','" + textBox4.Text + "')";
MessageBox.Show("OK", "Add Data
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();

14. comm.ExecuteNonQuery();
MessageBox.Show("Click OK", "Data Added
Successfully",MessageBoxButtons.OK);
conn.Close();
Search Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM patient WHERE pno='" +
comboBox1.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("Completed !"); }
reader = comm.ExecuteReader();
while (reader.Read())
{
textBox1.Text = reader[1].ToString();
comboBox2.Text = reader[2].ToString();
textBox2.Text = reader[3].ToString();
textBox3.Text = reader[4].ToString();
textBox4.Text = reader[5].ToString();
}
reader.Close();
Update Button
String connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "UPDATE patient SET pno='" + comboBox1.Text
+ "',pn='" + textBox1.Text + "',db='" + comboBox2.Text + "',bg='" +
textBox2.Text + "',da='" + textBox3.Text + "',dr='" + textBox4.Text + "'";
MessageBox.Show("Are u Sure", "Do You Want Update
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Success", "Data Added
Sucsessfully!",MessageBoxButtons.OK, MessageBoxIcon.Error);
conn.Close();
Clear Button
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";

15. Delete Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "DELETE*FROM patient WHERE pno='" +
comboBox1.Text + "'";
if (MessageBox.Show("Are You Sure Do You Want Delete This Record
?", "Sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
== DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Clear();
textBox3.Clear();
textBox4.Text = "";
Exit Button
this.Hide();
Doctor Details Window

16. Add Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "INSERT INTO patient VALUES('" + comboBox1.Text
+ "','" + textBox1.Text + "','" + comboBox2.Text +"','" + textBox2.Text
+ "','" + textBox3.Text + "','" + textBox4.Text + "')";
MessageBox.Show("OK", "Add Data
?", MessageBoxButtons.OK,MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Click OK", "Data Added
Successfully",MessageBoxButtons.OK);
conn.Close();
Search Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM patient WHERE pno='" +
comboBox1.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("Completed !"); }
reader = comm.ExecuteReader();
while (reader.Read())
{
textBox1.Text = reader[1].ToString();
comboBox2.Text = reader[2].ToString();
textBox2.Text = reader[3].ToString();
textBox3.Text = reader[4].ToString();
textBox4.Text = reader[5].ToString();
}
reader.Close();
Update Button
String connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";

17. commandstring = "UPDATE patient SET pno='" + comboBox1.Text
+ "',pn='" + textBox1.Text + "',db='" + comboBox2.Text + "',bg='" +
textBox2.Text + "',da='" + textBox3.Text + "',dr='" + textBox4.Text + "'";
MessageBox.Show("Are u Sure", "Do You Want Update
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Success", "Data Added
Sucsessfully!",MessageBoxButtons.OK, MessageBoxIcon.Error);
conn.Close();
Exit Button
this.Hide();
Delete Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "DELETE*FROM patient WHERE pno='" +
comboBox1.Text + "'";
if (MessageBox.Show("Are You Sure Do You Want Delete This Record
?", "Sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
== DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Clear();
textBox3.Clear();
textBox4.Text = "";
Clear Button
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
Medical Packages Window

18. Add Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "INSERT INTO patient VALUES('" + comboBox1.Text
+ "','" + textBox1.Text + "','" + comboBox2.Text +"','" + textBox2.Text
+ "','" + textBox3.Text + "','" + textBox4.Text + "')";
MessageBox.Show("OK", "Add Data
?", MessageBoxButtons.OK,MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Click OK", "Data Added
Successfully",MessageBoxButtons.OK);
conn.Close();
Search Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM patient WHERE pno='" +
comboBox1.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("Completed !"); }

19. reader = comm.ExecuteReader();
while (reader.Read())
{
textBox1.Text = reader[1].ToString();
comboBox2.Text = reader[2].ToString();
textBox2.Text = reader[3].ToString();
textBox3.Text = reader[4].ToString();
textBox4.Text = reader[5].ToString();
}
reader.Close();
Update Button
String connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "UPDATE patient SET pno='" + comboBox1.Text
+ "',pn='" + textBox1.Text + "',db='" + comboBox2.Text + "',bg='" +
textBox2.Text + "',da='" + textBox3.Text + "',dr='" + textBox4.Text + "'";
MessageBox.Show("Are u Sure", "Do You Want Update
?",MessageBoxButtons.OK, MessageBoxIcon.Error);
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Success", "Data Added
Sucsessfully!",MessageBoxButtons.OK, MessageBoxIcon.Error);
conn.Close();
Clear Button
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
Delete Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "DELETE*FROM patient WHERE pno='" +
comboBox1.Text + "'";
if (MessageBox.Show("Are You Sure Do You Want Delete This Record
?", "Sure?", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)
== DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionstring);

20. OleDbCommand comm = new OleDbCommand(commandstring, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
comboBox1.Text = "";
textBox1.Text = "";
comboBox2.Text = "";
textBox2.Clear();
textBox3.Clear();
textBox4.Text = "";
Exit Button
this.Hide();
Help Window
Select Button
string connectionstring, commandstring;
connectionstring =@"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:Hosptal Management Systemesoft.mdb";
commandstring = "SELECT*FROM help WHERE se='" + comboBox1.Text
+ "'";
OleDbConnection conn = newOleDbConnection(connectionstring);
OleDbCommand comm = new OleDbCommand(commandstring, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show("......"); }
reader = comm.ExecuteReader();

21. while (reader.Read())
{
textBox2.Text = reader[1].ToString();
}
reader.Close();
Exit Button
this.Hide();
Author Window
Exit Button
this.Hide();
Now I think you earned good knowledge about project . Now I hope to give you additional
codes to solve some problems. ( These are additional codes )
privatevoid btnadd_Click(object sender, EventArgs e)
{
string connectionString, commandString;
connectionString
=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:Hospital
SystemHMS.mdb";
commandString = "INSERT INTO Appoinment VALUES ('"+
cborefno.Text + "','" + txtpatname.Text + "','" + txtcontact.Text

22. + "','" + txtaddress.Text + "','" + cbogender.Text + "','" +
cboPayment.Text + "','" + txtamount.Text + "')";
OleDbConnection conn = newOleDbConnection(connectionString);
OleDbCommand comm = newOleDbCommand(commandString, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Added Succesfully");
cborefno.Items.Add(cborefno.Text);
Clear();
cborefno.Focus();
conn.Close();
}
privatevoid cborefno_SelectedIndexChanged(object sender,EventArgs e
)
{
string connectionString, commandString;
connectionString
=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:Hospital
SystemHMS.mdb";
commandString = "SELECT * FROM Appoinment WHERE
RefNo='" + cborefno.Text + "'";
OleDbConnection conn = newOleDbConnection(connectionString);
OleDbCommand comm = newOleDbCommand(commandString, conn);
OleDbDataReader reader = null;
try
{ conn.Open(); }
catch (Exception ex)
{ MessageBox.Show(ex.Message); }
reader = comm.ExecuteReader();
while (reader.Read())
{
txtpatname.Text = reader[1].ToString();
txtcontact.Text = reader[2].ToString();
txtaddress.Text = reader[3].ToString();
cbogender.Text = reader[4].ToString();
cboPayment.Text = reader[5].ToString();
txtamount.Text = reader[6].ToString(); }
reader.Close();
conn.Close();
}
privatevoid Form1_Load(object sender, EventArgs e)
{

23. string connectionString, commandString;
connectionString
=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:Hospital
SystemHMS.mdb";
commandString = "SELECT RefNo FROM Appoinment";
OleDbConnection conn = newOleDbConnection(connectionString);
OleDbCommand comm = newOleDbCommand(commandString, conn);
OleDbDataReader reader = null;
try
{
conn.Open();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
reader = comm.ExecuteReader();
while (reader.Read())
{
cborefno.Items.Add(reader[0]);
}
reader.Close();
conn.Close();
}
privatevoid btnupdate_Click(object sender, EventArgs e)
{
string connectionString, commandString;
connectionString
=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:Hospital
SystemHMS.mdb";
commandString = "UPDATE Appoinment SET PatName = '"+
txtpatname.Text + "', Contact = '" + txtcontact.Text + "', Address
= '" + txtaddress.Text + "', Gender = '" + cbogender.Text
+ "',PayType = '" + cboPayment.Text +"',Amount='" + txtamount.Text
+ "' where RefNo = '" + cborefno.Text + "'";
if (MessageBox.Show("Are you sure, you want to Update this
record?", "Sure?", MessageBoxButtons.YesNo) == DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionString);
OleDbCommand comm = newOleDbCommand(commandString, conn);

24. conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Updated Succesfully");
Clear();
cborefno.Focus();
conn.Close();
}
privatevoid btndelete_Click(object sender, EventArgs e)
{
string connectionString, commandString;
connectionString
=@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:Hospital
SystemHMS.mdb";
commandString = "DELETE Appoinment.RefNo FROM
Appoinment where Appoinment.RefNo = '" + cborefno.Text + "'";
if (MessageBox.Show("Are you sure, you want to delete this
record?", "Sure?", MessageBoxButtons.YesNo) == DialogResult.No)
{
return;
}
OleDbConnection conn = newOleDbConnection(connectionString);
OleDbCommand comm = newOleDbCommand(commandString, conn);
conn.Open();
comm.ExecuteNonQuery();
MessageBox.Show("Record Deleted Successfully");
conn.Close();
cborefno.Items.Remove(cborefno.Text);
cborefno.Focus();
Clear();
}
privatevoid Clear()
{
cborefno.Text = "";
txtpatname.Clear();
txtcontact.Clear();
txtaddress.Clear();
cbogender.Text = "";
cboPayment.Text = "";
txtamount.Clear();
cborefno.Focus();
}
privatevoid btnclear_Click(object sender, EventArgs e)

25. {
Clear();
}
privatevoid btnexit_Click(object sender, EventArgs e)
{
this.Hide();
}
********************************
About Me !
********************************
Kasun Madhusanka
Phone:+94770597830
Email:kktmadhusanka@gmail.com
To Make likes me on facebook click below link
https://www.facebook.com/KKTMadhusanka
To make connection with me !
https://www.linkedin.com/in/kktmadhusanka

26. Posted by Kasun Madhusanka at 3:44 PM