//* Overall button controls *//
//This method controls the show all button. When this button is clicked all the products and suppliers will be shown in the
//listboxes
private void btnShowAll_Click(object sender, EventArgs e)
{
products = ProductsDB.GetProducts(); //All the products are retreived using ProductsDB.GetProducts()
suppliers = SuppliersDB.GetSuppliers(); //All the suppliers are retreived using SuppliersDB.GetSuppliers()
ReloadListboxes();
}
// This method populates the combo box with available Suppliers
private void LoadSupplierCB()
{
int prodId = ProductsDB.getProductId(prodName);
List <Suppliers> temp = new List <Suppliers>(); // Temp variable to store in order to convert string to int
List <Suppliers> supplierList = new List <Suppliers>();
// Grabs all supplier ID that doesn't have the particular supplier ID in Product_Supplier
temp = Products_SuppliersDB.GetNotInSuppliersID(prodId);
try
{
foreach (Suppliers supplier in temp)
{
// Converts the Supplier IDs to Supplier Names
supplier.SupName = SuppliersDB.getSupName(supplier.SupplierId);
supplierList.Add(supplier);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
// Populate the combo box
try
{
cbSupplierName.DataSource = supplierList;
cbSupplierName.DisplayMember = "SupName";
cbSupplierName.ValueMember = "SupplierId";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
}
private void btnGetNext_Click(object sender, EventArgs e)
{
int NextID = 0;
NextID = SuppliersDB.getNextSupplierId();
txtSupplierId.Text = NextID.ToString();
}
// Deletes the Product_Supplier ID
private void btnDelete_Click_1(object sender, EventArgs e)
{
prodName = cbProdName.Text;
supName = cbSupName.Text;
// Grabs the ID through product and supplier names
int prodID = ProductsDB.getProductId(prodName);
int supID = SuppliersDB.getSupplierId(supName);
// Confirmation message for delete
DialogResult result = MessageBox.Show("Are you sure you want to delete link between "
+ prodName + " and " + supName + "?",
"Confirm Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
try
{
if (!Products_SuppliersDB.DeleteProdSup(prodID, supID)) // Checks the DB
{
MessageBox.Show("Another user has updated or deleted " +
"that customer.", "Database Error");
}
}
catch
{
MessageBox.Show("Cannot delete current Product Supplier when it is added as a product in\n" +
"a package. Please remove the product from the package first");
}
}
this.Close();
}
//This method controls what happens when someone selects a supplier in the supplier listbox. When a supplier is selected
//the product list box is populated with the products associated with the supplier.
private void lbSuppliers_SelectedIndexChanged(object sender, EventArgs e)
{
lbProducts.Items.Clear();//clear all the items in the list box for the products
try
{
string supName = lbSuppliers.GetItemText(lbSuppliers.SelectedItem); //get the supplier name for the selected supplier
int supplierId = SuppliersDB.getSupplierId(supName); //get the supplier id from the supplier name
//use that supplierId to get all the products that are associated with the supplier Id
List <Products> productsSel = Products_SuppliersDB.GetProdForSup(supplierId);
//Display the products for the selected supplier
foreach (Products product in productsSel)
{
lbProducts.Items.Add(product.ProdName);
}
}
catch (SqlException ex)
{
throw ex;
}
// Button controls
btnModifyProd.Visible = false;
btnDeleteProd.Visible = false;
btnDeleteData.Visible = true;
btnAddSupToProd.Visible = false;
btnAddProdToSup.Visible = true;
btnModifySup.Visible = true;
btnDeleteSup.Visible = true;
}
private void frmProduct_Supplier_Activated(object sender, EventArgs e)
{
products = ProductsDB.GetProducts(); //All the products are retreived using ProductsDB.GetProducts()
suppliers = SuppliersDB.GetSuppliers(); //All the suppliers are retreived using SuppliersDB.GetSuppliers()
ReloadListboxes();
}
private void btnDelete_Click(object sender, EventArgs e)
{
if (Validator.IsPresent(txtSupplierId))
{
DialogResult result = MessageBox.Show("Are you sure you want to delete this supplier?",
"Confirm Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
bool attempt = false;
try
{
attempt = SuppliersDB.DeleteSupplier(supplierId);
}
catch
{
MessageBox.Show("Cannot delete " + supName + " when it is currently linked a Supplier." +
" Please remove all links for " + supName + " in order to delete the product");
}
if (attempt)
{
MessageBox.Show("Successfully deleted " + supName);
this.Close();
}
}
}
}
// This method populates the combo box with available Products
private void LoadProductCB()
{
int supId = SuppliersDB.getSupplierId(suppName);
List <Products> temp = new List <Products>(); // Temp variable to store in order to convert string to int
List <Products> productList = new List <Products>();
// Grabs all product ID that doesn't have the particular supplier ID in Product_Supplier
temp = Products_SuppliersDB.GetNotInProductsID(supId);
try
{
// Converts the Product IDs to Product Names
foreach (Products products in temp)
{
products.ProdName = ProductsDB.getProdName(products.ProductId);
productList.Add(products);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
// Populate the combo box
try
{
cbProductName.DataSource = productList;
cbProductName.DisplayMember = "ProdName";
cbProductName.ValueMember = "ProductId";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
}
private void btnDeleteProduct_Click(object sender, EventArgs e)
{
//supName is equal to the selected items at index 0 to text
string supName = (lvPkgDetails.Items[lvPkgDetails.SelectedItems[0].Index].Text);
//suppID is equal to the result of the getProductId method taking supName as an argument
int suppID = ProductsDB.getProductId(supName);
//prodName is equal to the selected items at index 0, sub-item index 1 to text
string prodName = lvPkgDetails.SelectedItems[0].SubItems[1].Text;
//prodID is equal to the result of the getSupplierId method taking prodName as an argument
int prodID = SuppliersDB.getSupplierId(prodName);
//productSupplierID is equal to the result of the get_PpsID method taking suppID and prodID as arguments
int psID = Products_SuppliersDB.Get_PpsID(suppID, prodID);
// pkgID is equal to the result of the GetPackageIDBy_PsID method taking PsID as an argument
int pkgID = PackagesDB.GetPackageIDBy_PsID(psID);
bool exists = false;
bool attempt = false;
if (!exists) // if it does not exist, do this
{
try
{
// attempt = add product to package method, taking product supplier id and package id as arguments
attempt = ProductsDB.deleteProductFromPkg(pkgID, psID);
//MessageBox.Show("Succesfully deleted");
}
catch (SqlException ex)
{
MessageBox.Show("Error modifying package\n" + ex);
}
if (attempt)
{
MessageBox.Show("Succesfully deleted");
lvPkgDetails.Items.Clear();
int i = 0;
//int pkgID = lvPackages.Items.IndexOf(lvPackages.SelectedItems[i]); -- this is an old logic used
List <Package_Product_Suppliers> pps_o = PackagesDB.GetProductSuppliersByPackage(pkgID);
foreach (Package_Product_Suppliers pps in pps_o)
{
lvPkgDetails.Items.Add(pps.ProdName);
lvPkgDetails.Items[i].SubItems.Add(pps.SupName);
i += 1;
}
}
}
else
{
MessageBox.Show("Unable to delete");
}
btnAddPackage.Visible = true;
btnDeleteProduct.Visible = false;
lvPkgDetails.Items.Clear();
}
// Grabbing the data needed to insert into Products_Suppliers Table
private Products_Suppliers PutInSuppToProd(Products_Suppliers prodSupp)
{
prodSupp.ProductSupplierId = Convert.ToInt32(txtProdSuppId.Text);
prodSupp.ProductId = ProductsDB.getProductId(txtProdName.Text); // Grabbing Product Id through Product name
prodSupp.SupplierId = SuppliersDB.getSupplierId(cbSupplierName.Text); // Grabbing Supplier Id through Supplier name
return(prodSupp);
}
private void btnConfirm_Click(object sender, EventArgs e)
{
if (cBSupplier.SelectedText != "")
{
string prodNameSelected = cBProduct.GetItemText(cBProduct.SelectedItem); //Get the product name for the selected product
int prodIdSelected = ProductsDB.getProductId(prodNameSelected); //find the productId of the selected item
// get thee supplier name from the combo box selection
string supNameSelected = cBSupplier.GetItemText(cBSupplier.SelectedItem);
// get the supplierID from the suppliername using the method in SuppliersDB
int supplierIdSelected = SuppliersDB.getSupplierId(supNameSelected);
// product supplier ID is equal to a method that retrieves it in a SQL Query
int ppsID = Products_SuppliersDB.Get_PpsID(prodIdSelected, supplierIdSelected);
// pkgID is equal to the selected ITEM at the index clicked to maintain consistency
int pkgID = Convert.ToInt32(lvPackages.Items[lvPackages.SelectedItems[0].Index].Text);
bool exists = false;
bool attempt = false;
if (!exists) // if it does not exist, do this
{
try
{
// attempt = add product to package method, taking product supplier id and package id as arguments
attempt = PackagesDB.AddProdToPackage(ppsID, pkgID);
}
catch (SqlException ex)
{
MessageBox.Show("Error modifying package\n" + ex);
}
if (attempt)
{
MessageBox.Show("Succesfully modified");
int i = 0;
lvPkgDetails.Items.Clear();
List <Package_Product_Suppliers> pps_o = PackagesDB.GetProductSuppliersByPackage(pkgID);
foreach (Package_Product_Suppliers pps in pps_o)
{
lvPkgDetails.Items.Add(pps.ProdName);
lvPkgDetails.Items[i].SubItems.Add(pps.SupName);
i += 1;
}
}
}
else
{
MessageBox.Show("Package is already in the database");
}
}
else
{
MessageBox.Show("Please choose a valid supplier");
}
}
// Opens delete supplier form
private void btnDeleteSup_Click_1(object sender, EventArgs e)
{
supNameSelected = lbSuppliers.GetItemText(lbSuppliers.SelectedItem);
supplierIdSelected = SuppliersDB.getSupplierId(supNameSelected);
using (DeleteSuppliers deletesupplier = new DeleteSuppliers())
{
if (deletesupplier.ShowDialog() == DialogResult.OK)
{
}
}
}
private void btnUpdate_Click(object sender, EventArgs e)
{
//check if the information is valid and present
if (Validator.IsPresent(txtSupplierId) && Validator.IsPresent(txtSupplierName) &&
Validator.NonNegativeInt32(txtSupplierId))
{
string supName = txtSupplierName.Text;
int supplierId = Convert.ToInt32(txtSupplierId.Text);
bool exists = false;
bool attempt = false;
List <Suppliers> suppliers = SuppliersDB.GetSuppliers();
//for each supplier in suppliers list, check if the new name is present
foreach (Suppliers supplier in suppliers)
{
if (supplier.SupName == supName)
{
exists = true;
}
}
if (!exists)
{
//if there is no name by the name
try
{
//replace the information
attempt = SuppliersDB.UpdateSupplier(supplierId, supName, oldsupplierid, oldsupName);
}
catch (SqlException ex)
{
MessageBox.Show("Error modifying supplier\n" + ex);
}
if (attempt)
{
MessageBox.Show("Successfully modified");
this.Close();
}
}
else
{
MessageBox.Show("Supplier name is already in the database");
}
}
}
//This method is used to get the suppliers for a certain productId. It returns a List of suppliers
public static List <Suppliers> GetSupForProd(int productId)
{
List <Suppliers> supplierList = new List <Suppliers>(); //create a list of suppliers
Suppliers supplier = null; //create a supplier and set it to null
SqlConnection con = TravelExpertsDB.GetConnection(); //Create a connection
//Create a query that selects all the supplier ID's from the product suppliers where the product ID is given
string selectQuery = "SELECT SupplierId " +
"FROM Products_Suppliers " +
"WHERE ProductId = @ProductId";
SqlCommand selectCommand = new SqlCommand(selectQuery, con); //Create a selectCommand using SqlCommand
selectCommand.Parameters.AddWithValue("@ProductId", productId); //Bind the given productId to @ProductId
try
{
con.Open(); //Open connection
SqlDataReader reader = selectCommand.ExecuteReader();
while (reader.Read()) //read the supplierId's if they exist
{
supplier = new Suppliers(); //create a new supplier
supplier.SupplierId = (int)reader["SupplierId"]; //Add the Id to the supplier
supplierList.Add(supplier); //Add the supplier to the list of suppliers
}
}
catch (SqlException ex)
{
throw ex;
}
finally
{
con.Close();//Close the connection
}
//We now have all the id's for the suppliers but do not have there supplier names
//Go through each of the suppliers in the supplier list and find there names
foreach (Suppliers sup in supplierList)
{
//use getSupName which is from the SuppliersDB to find the names of the suppliers and add them to there
//corresponding suppliers.
sup.SupName = SuppliersDB.getSupName(sup.SupplierId);
}
return(supplierList);//return the supplier list
}
private void GetProd()
{
try
{
int supplierId = SuppliersDB.getSupplierId(supName);//get the supplier id from the supplier name
//use that supplierId to get all the products that are associated with the supplier Id
List <Products> productsSel = Products_SuppliersDB.GetProdForSup(supplierId);
//Display the products for the selected supplier
foreach (Products product in productsSel)
{
cbProdName.Items.Add(product.ProdName);
}
}
catch (SqlException ex)
{
throw ex;
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
if (Validator.IsPresent(txtSupplierId) && Validator.IsPresent(txtSupplierName) &&
Validator.NonNegativeInt32(txtSupplierId))
{
string supName = txtSupplierName.Text;
int supplierId = Convert.ToInt32(txtSupplierId.Text);
bool exists = false;
bool attempt = false;
List <Suppliers> suppliers = SuppliersDB.GetSuppliers();
foreach (Suppliers supplier in suppliers)
{
if (supplier.SupName == supName)
{
exists = true;
}
}
if (!exists)
{
try
{
attempt = SuppliersDB.InsertSupplier(supplierId, supName);
}
catch
{
MessageBox.Show("Provided Supplier ID already exists, please enter a different one");
txtSupplierId.Focus();
}
if (attempt)
{
MessageBox.Show("Successfully added " + supName + " to the database");
this.Close();
}
}
}
}
