void Serializing() //writing suggest drug object in the file
{
Drugs drug = new Drugs();
drug._drugType = DrugTypeTb.Text;
drug._drugName = DrugNameTb.Text;
drug._drugStrenght = DrugStrenghtTb.Text;
Stream stream = null;
IFormatter formatter = new BinaryFormatter();
string path = First_Page.drug_path + "\\" + "Drug_Suggestions.txt";
try
{
if (File.Exists(path))
{
stream = new FileStream(path, FileMode.Append, FileAccess.Write);
}
else
{
throw new CustomException("Cannot open file");
}
}
catch (CustomException e)
{
MessageBox.Show(e.Message, "Error");
}
formatter.Serialize(stream, drug);
stream.Close();
}
private void filereading()
{
Stream read = null;
int i = 1;
IFormatter formatter = new BinaryFormatter();
string path = drugs_path + "Drug_Suggestions.txt";
try
{
if (File.Exists(path))
{
read = new FileStream(path, FileMode.Open, FileAccess.Read);
}
else
{
throw new CustomException("Cannot open Drugs.txt");
}
}
catch (CustomException e)
{
MessageBox.Show(e.Message);
}
while (read.Position != read.Length)
{
drug = (Drugs)formatter.Deserialize(read);
AddRow(i);
i += 1;
}
read.Close();
}
//Update Button
private void button6_Click(object sender, EventArgs e)
{
Drugs d = new Drugs();
d._drugType = dataGridView1.Rows[option].Cells[1].Value.ToString();
d._drugName = dataGridView1.Rows[option].Cells[2].Value.ToString();
d._drugStrenght = dataGridView1.Rows[option].Cells[3].Value.ToString();
updatefiling(d, option + 1);
txttb.Clear();
btndelete.Visible = false;
btnupdate.Visible = false;
disable_dataGridView();
}
void updatefiling(Drugs d, int count)
{
Drugs drug = new Drugs();
IFormatter formatter = new BinaryFormatter();
string path = drugs_path;
Stream write = new FileStream(path + "temp.txt", FileMode.Create, FileAccess.Write);
Stream read = null;
try
{
if (File.Exists(path + "Drugs.txt"))
{
read = new FileStream(path + "Drugs.txt", FileMode.Open, FileAccess.Read);
}
else
{
throw new CustomException("Cannot open Drugs.txt");
}
}
catch (CustomException e)
{
MessageBox.Show(e.Message);
}
int i = 0;
while (read.Position != read.Length)
{
i += 1;
drug = (Drugs)formatter.Deserialize(read);
if (i != count)
{
formatter.Serialize(write, drug);
}
else
{
formatter.Serialize(write, d);
}
}
read.Close();
write.Close();
File.Delete(path + "Drugs.txt");
File.Move(path + "temp.txt", path + "Drugs.txt");
dataGridView1.Rows.Clear();
filereading();
}
void AddDrugs() //for adding drugs_names in the combo box
{
Drugs drug = null;
IFormatter formatter = new BinaryFormatter();
string path = First_Page.drug_path + "\\" + "Drugs.txt";
Stream read = new FileStream(path, FileMode.Open, FileAccess.Read);
while (read.Position != read.Length)
{
drug = (Drugs)formatter.Deserialize(read);
comboDrug.Items.Add(drug._drugName);
}
read.Close();
}
//When admin wants to approve any row
void Approve_drug(int count)
{
Stream read = null;
IFormatter formatter = new BinaryFormatter();
string path = drugs_path + "Drug_Suggestions.txt";
try
{
if (File.Exists(path))
{
read = new FileStream(path, FileMode.Open, FileAccess.Read);
}
else
{
throw new CustomException("Cannot open DrugSuggestions.txt");
}
}
catch (CustomException e)
{
MessageBox.Show(e.Message);
}
for (int i = 1; i <= count; ++i)
{
drug = (Drugs)formatter.Deserialize(read);
}
read.Close();
MessageBox.Show(drug._drugType);
MessageBox.Show(drug._drugName);
MessageBox.Show(drug._drugStrenght);
path = drugs_path + "Drugs.txt";
Stream write = new FileStream(path, FileMode.Append, FileAccess.Write);
formatter.Serialize(write, drug);
write.Close();
RemoveSuggestion(count);
}