// Insert data into Database
public bool Insert(PatientClass p)
{
// Create a default return type and set its value to false
bool isSuccess = false;
// Step 1: Connect database
SqlConnection conn = new SqlConnection(myconnstr);
try
{
// Step 2: Create a SQL Query to insert data
string sql = "INSERT INTO Patient (First_Name, Last_Name, Contact, Address, Sex, DOB, Blood_Type) " +
"VALUES (@FirstName, @LastName, @ContactNo, @Address, @Sex, @Dob, @BloodType)";
// Create SQL command using sql and conn
SqlCommand cmd = new SqlCommand(sql, conn);
// Create parameters to add data
cmd.Parameters.AddWithValue("@FirstName", p.FirstName);
cmd.Parameters.AddWithValue("@LastName", p.LastName);
cmd.Parameters.AddWithValue("@ContactNo", p.ContactNo);
cmd.Parameters.AddWithValue("@Address", p.Address);
cmd.Parameters.AddWithValue("@Sex", p.Sex);
cmd.Parameters.AddWithValue("@Dob", p.Dob);
cmd.Parameters.AddWithValue("@BloodType", p.BloodType);
// Open connection here
conn.Open();
int rows = cmd.ExecuteNonQuery();
// If the query runs successfully then the value of rows will be
// greater than zero else its value will be 0
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
conn.Close();
}
return(isSuccess);
}
// Method to update data in database from our application
public bool Update(PatientClass p)
{
// Create a default return type and set its default value to false
bool isSuccess = false;
SqlConnection conn = new SqlConnection(myconnstr);
try
{
// SQL to update data in our database
string sql = "UPDATE Patient SET First_Name=@FirstName, Last_Name=@LastName, Contact=@ContactNo, Address=@Address, Sex=@Sex, DOB=@Dob, Blood_Type=@BloodType " +
"WHERE Patient_ID=@PatientId";
// Create SQL command
SqlCommand cmd = new SqlCommand(sql, conn);
// Create parameters to add value
cmd.Parameters.AddWithValue("@FirstName", p.FirstName);
cmd.Parameters.AddWithValue("@LastName", p.LastName);
cmd.Parameters.AddWithValue("@ContactNo", p.ContactNo);
cmd.Parameters.AddWithValue("@Address", p.Address);
cmd.Parameters.AddWithValue("@Sex", p.Sex);
cmd.Parameters.AddWithValue("@Dob", p.Dob);
cmd.Parameters.AddWithValue("@BloodType", p.BloodType);
cmd.Parameters.AddWithValue("PatientId", p.PatientId);
// Open database connection
conn.Open();
int rows = cmd.ExecuteNonQuery();
// If the query runs successfully then the value of rows will be
// greater than zero else its value will be 0
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
conn.Close();
}
return(isSuccess);
}
// Method to delete data from database
public bool Delete(PatientClass p)
{
// Create a default return type and set its default value to false
bool isSuccess = false;
// Create SQL connection
SqlConnection conn = new SqlConnection(myconnstr);
try
{
// SQL to delete data
string sql = "DELETE FROM Patient WHERE Patient_ID=@PatientId";
// Create SQL command
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.Parameters.AddWithValue("@PatientId", p.PatientId);
// Open connection
conn.Open();
int rows = cmd.ExecuteNonQuery();
// If the query runs successfully then the value of rows will be
// greater than zero else its value will be 0
if (rows > 0)
{
isSuccess = true;
}
else
{
isSuccess = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
// Close connection
conn.Close();
}
return(isSuccess);
}
