public static string Add(Supplier supp)
{
string connectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
SqlConnection connection = new SqlConnection(connectionString);
String sql = "INSERT INTO [Supplier] VALUES(@SupplierID ,@Name, @Address, @PhoneNum, @Notes)";
//if there is an error with the data it will catch the exception and display an error
try
{
connection.Open();
SqlCommand command = new SqlCommand(sql, connection);
command.Parameters.Add("@SupplierID", SqlDbType.Int);
command.Parameters["@SupplierID"].Value = supp.SupplierID;
command.Parameters.Add("@Name", SqlDbType.NVarChar);
command.Parameters["@Name"].Value = supp.Name;
command.Parameters.Add("@Address", SqlDbType.NVarChar);
command.Parameters["@Address"].Value = supp.Address;
command.Parameters.Add("@PhoneNum", SqlDbType.Int);
command.Parameters["@PhoneNum"].Value = supp.PhoneNum;
command.Parameters.Add("@Notes", SqlDbType.NVarChar);
command.Parameters["@Notes"].Value = supp.Notes;
command.ExecuteNonQuery();
connection.Close();
return "Transaction Complete";
}
catch (SqlException sqlEx)
{
Console.WriteLine(sqlEx.Message);
return sqlEx.Message;
}
}
protected void btnSupplier_Click(object sender, EventArgs e)
{
newSupp = new Supplier(txtName.Text,txtAddress.Text,Convert.ToInt32(txtPhoneNum.Text),txtNotes.Text);
Response.Write(newSupp.Add());
}
protected void btnEditSupplier_Click(object sender, EventArgs e)
{
newSupp = new Supplier(txtName.Text, txtAddress.Text, Convert.ToInt32(txtPhoneNum.Text), txtNotes.Text);
Response.Write(newSupp.Edit(Convert.ToInt32(lstSuppliers.SelectedValue), txtName.Text, txtAddress.Text, Convert.ToInt32(txtPhoneNum.Text), txtNotes.Text));
}
public static string Edit(Supplier supp,int suppiD, String name, String address, int phoneNum, String notes)
{
//UPDATE table_name SET column1 = value1, column2 = value2...., columnN = valueN WHERE [condition];
supp.Name = name;
supp.Address = address;
supp.PhoneNum = phoneNum;
supp.Notes = notes;
string connectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
SqlConnection connection = new SqlConnection(connectionString);
//[Supplier] VALUES(@SupplierID ,@Name, @Address, @PhoneNum, @Notes)"
String sql = "UPDATE [Supplier] SET Name = @Name, Address = @Address, PhoneNumber = @PhoneNumber, Notes = @Notes WHERE SupplierID = @SupplierID";
//if there is an error with the data it will catch the exception and display an error
try
{
if (supp.SupplierID > 0)
{
connection.Open();
SqlCommand command = new SqlCommand(sql, connection);
command.Parameters.Add("@Name", SqlDbType.NVarChar);
command.Parameters["@Name"].Value = supp.Name;
command.Parameters.Add("@Address", SqlDbType.NVarChar);
command.Parameters["@Address"].Value = supp.Address;
command.Parameters.Add("@PhoneNumber", SqlDbType.Int);
command.Parameters["@PhoneNumber"].Value = supp.PhoneNum;
command.Parameters.Add("@Notes", SqlDbType.NVarChar);
command.Parameters["@Notes"].Value = supp.Notes;
command.Parameters.Add("@SupplierID", SqlDbType.Int);
command.Parameters["@SupplierID"].Value = suppiD;
command.ExecuteNonQuery();
connection.Close();
return "Edit complete";
}
else
return "SupplierID < 1";
}
catch (SqlException sqlEx)
{
Console.WriteLine(sqlEx.Message);
return sqlEx.Message;
}
}
public static string GetSupplierID(Supplier supp)
{
int sID = 0;
string connectionString = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
SqlConnection con = new SqlConnection(connectionString);
SqlDataReader reader;
SqlCommand cmd = new SqlCommand("SELECT SupplierID FROM [Supplier] WHERE SupplierID = (SELECT MAX(SupplierID) FROM [Supplier])", con);
try
{
con.Open();
reader = cmd.ExecuteReader();
while (reader.Read())
{
sID = Convert.ToInt32(reader["SupplierID"]);
sID++;
}
supp.SupplierID = sID;
reader.Close();
con.Close();
return "Success";
}
catch (SqlException sqlEx)
{
return (sqlEx.Message);
}
}