// Takes current selected Product_Supplier and adds it to the package [Ronnie]
private void btnAdd_Click(object sender, EventArgs e)
{
// Get ProductSupplierID from combobox
int prodSupID = Convert.ToInt32(productSupplierIdTextBox.Text);
int packageID = currentPackage.PackageId;
// if the current product and supplier combination does not exist for the package, add it to the database
if (!TravelExpertsQueryManager.ExistPackagesProductsSupplier(packageID, prodSupID))
{
// Create a PackagesProductSupplier with that ID, and the Package ID from the current package
Packages_Products_Supplier newPackProdSup = new Packages_Products_Supplier
{
ProductSupplierId = prodSupID,
PackageId = packageID
};
// Add that PackagesProductsSupplier to the db
using (travelexpertsDataContext dbContext = new travelexpertsDataContext())
{
// insert through data context object from the main form
dbContext.Packages_Products_Suppliers.InsertOnSubmit(newPackProdSup);
dbContext.SubmitChanges(); // submit to the database
}
// Re-load the datagrid view
refreshDataGrid();
}
else
{
MessageBox.Show("The selected product and supplier portfolio has already been added to the package. Please try again.", "Input Error");
}
}
private void refreshDataGrid()
{
// Populate data grid showing products
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
grdProdSup.DataSource = TravelExpertsQueryManager.FindProdInfoByPackage(db, currentPackage.PackageId);
}
}
private void DisplayProdSupId()
{
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
int prodId = Convert.ToInt32(prodNameComboBox.SelectedValue);
int supId = Convert.ToInt32(supNameComboBox.SelectedValue);
productSupplierIdTextBox.Text = TravelExpertsQueryManager.FindProdSuppID(db, prodId, supId).ToString();
}
}
// Updates the display of the prodsuppID
private void RefreshProdSupId()
{
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
int prodId = Convert.ToInt32(productIdComboBox.SelectedValue); // grabs id from product dropdown
int supId = Convert.ToInt32(supplierIdComboBox.SelectedValue); // grabs id from supplier dropdown
productSupplierIdTextBox.Text = TravelExpertsQueryManager.FindProdSuppID(db, prodId, supId).ToString(); // uses that data to grab the corresponding prodsup id
}
}
private void prodNameComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
// get the list of suppliers applicable with the selected product ID
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
supNameComboBox.DataSource = TravelExpertsQueryManager.GetSuppliersByProductID(db, Convert.ToInt32(prodNameComboBox.SelectedValue));
DisplayProdSupId();
}
}
/// <summary>
/// Refreshes data for the associated packages datagrid, based on current selected row in prod_supp grid
/// </summary>
private void RefreshPackagesByProdSuppGrid()
{
//// Grab ID of the row currently selected in the Prod_Supp datagrid
selectedProdID = Convert.ToInt32(grdProductSuppliers.SelectedRows[0].Cells[0].Value);
// Set title for the products data using that current id
lblAssociatesPackages.Text = $"Associated Packages for selected product (ID #{selectedProdID})";
// Use a query to get only packages associated with the prod_supp id, and bind it to the grid
grdPackagesforProdSupp.DataSource = TravelExpertsQueryManager.GetPackagesByProdSuppID(selectedProdID);
}
// Updates the data and display just for the grid of associated products, based on current selection of package datagrid
private void RefreshProductGrid()
{
// Grab ID of the row currently selected in the Packages Datagrid. [Eric]
selectedPackageId = Convert.ToInt32(grdPackages.CurrentRow.Cells[0].Value);
// Set title for the products data using that current id
lblSelectedProdsTitle.Text = $"Products for Selected Package (ID #{selectedPackageId})";
// Populate data in Product Info gridview
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
// Use an in-depth query to grab the info needed for the product info data grid
dataGridView1.DataSource = TravelExpertsQueryManager.FindProdInfoByPackage(db, selectedPackageId);
}
}
// Initial form setup
private void frmProdSupplierAddEdit_Load(object sender, EventArgs e)
{
// On load, populate data for all data displays
rootDB = new travelexpertsDataContext(); // create a new context
//get product_supplier data for top datagrid
products_SupplierBindingSource.DataSource = TravelExpertsQueryManager.GetProductsSuppliersExtended(rootDB);
selectedProdID = Convert.ToInt32(grdProductSuppliers.Rows[0].Cells[0].Value); // set selectedProdID as ID of top row
lblSelectedProdsTitle.Text = $"Modify details for selected product (ID #{selectedProdID})"; // Set display for that ID
supplierIdComboBox.DataSource = rootDB.Suppliers; // get supplier data for suppliers details dropbox
productIdComboBox.DataSource = rootDB.Products; // get product data for products details dropbox
RefreshPackagesByProdSuppGrid(); // get package data for selected product_supplier row (in this case, top one)
SetDataGridToFirstEntry(); // Selects the first row of the main datagrid
}
//If Modify Button was clicked on Form1
private void frmAddModify_Load(object sender, EventArgs e)
{
if (!isAdd) // Set up for Modify mode - use the Package passed from the last form to populate fields
{
// Update the title and description of the page
lblTitle.Text = "Package Manager - Edit Package";
lblDesc.Text = $"Edit any details and modify product list for the current package (ID #{currentPackage.PackageId}).";
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
// Grab current package ID used to create this modify page
int packageId = currentPackage.PackageId;
// Use an in-depth query to grab the info needed for the product info data grid
dataGridView1.DataSource = TravelExpertsQueryManager.FindProdInfoByPackage(db, currentPackage.PackageId);
}
// Set up a snapshot of current associated package_product_suppliers entries
ppsSnapshot = TravelExpertsQueryManager.GetPackagesProductsSuppliersByPackageID(currentPackage.PackageId);
// handle nullable datetime
if (currentPackage.PkgStartDate == null)
{
EmptyDateTimePicker(pkgStartDateDateTimePicker);
}
if (currentPackage.PkgEndDate == null)
{
EmptyDateTimePicker(pkgEndDateDateTimePicker);
}
// Display current package information in details view
packageBindingSource.Add(currentPackage);
}
else // Set up for Add mode
{
// Update the title and description of the page
lblTitle.Text = "Package Manager - Add A New Package";
lblDesc.Text = "Add details and products for a new package.";
EmptyDateTimePicker(pkgStartDateDateTimePicker);
EmptyDateTimePicker(pkgEndDateDateTimePicker);
}
}
//To add Products to a Package - calls form ProdSuppliers
private void btnEditAddProducts_Click(object sender, EventArgs e)
{
frmProdSupplier prodsForm = new frmProdSupplier();
prodsForm.currentPackage = currentPackage;
DialogResult result = prodsForm.ShowDialog(); // display second form modal
if (result == DialogResult.OK) // new row got inserted
{
// Toggle a switch noting that products were updated - checked in the event of cancel
didAddProducts = true;
// Show the updated list of products associated with this package
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
dataGridView1.DataSource = TravelExpertsQueryManager.FindProdInfoByPackage(db, currentPackage.PackageId);
}
}
}
// Checking off the top filter button will toggle filtering all products in the product_supplier datagrid (either all of them, or just those with packages)
private void checkboxFilterProducts_CheckedChanged(object sender, EventArgs e)
{
// Update the persisting db image (used as a data source)
rootDB = new travelexpertsDataContext();
// If the user checks off the option to filter
if (checkboxFilterProducts.Checked == true)
{
// Query PPS to find all ProductSuppliers associated to packages
List <int> prodSupIDsWithPackages = rootDB.Packages_Products_Suppliers.Select(pps =>
pps.ProductSupplierId) // just need ids
.ToList();
// Filter the datagrid to only show those entries
products_SupplierBindingSource.DataSource = TravelExpertsQueryManager.GetProductsSuppliersExtended(rootDB, prodSupIDsWithPackages);
}
else
{
products_SupplierBindingSource.DataSource = TravelExpertsQueryManager.GetProductsSuppliersExtended(rootDB);
}
}
// Whenever the user selects a product from the dropdown, update the suppliers dropdown with appropriate data [Eric]
private void productIdComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
using (travelexpertsDataContext db = new travelexpertsDataContext())
{
// If the user has selected the option to filter suppliers
if (checkBoxFilterSuppliers.Checked == true)
{
// Get the list of suppliers applicable with the selected product ID
supplierIdComboBox.DataSource = TravelExpertsQueryManager.GetSuppliersByProductID(db, Convert.ToInt32(productIdComboBox.SelectedValue));
// Make top option of suppliers dropdown selected
supplierIdComboBox.SelectedIndex = 0;
}
else
{
supplierIdComboBox.DataSource = db.Suppliers; // get supplier data for suppliers details dropbox
// Make top option of suppliers dropdown selected
supplierIdComboBox.SelectedIndex = 0;
}
}
}
// Go back to last page without saving changes. This may involve some cleaning up, depending on the mode and if products were added [Eric]
private void btnCancel_Click(object sender, EventArgs e)
{
using (travelexpertsDataContext dbContext = new travelexpertsDataContext())
{
// First, we have to check to see if any products were added to the package before cancelling
if (didAddProducts) // this will be true if so - no need to spend time querying the db
{
// Get the current PPS entries in the database corresponsind to this package
List <Packages_Products_Supplier> ppsCurrent =
TravelExpertsQueryManager.GetPackagesProductsSuppliersByPackageID(currentPackage.PackageId);
// Next, we have to get the PPS entries to re-add (if they were deleted) and/or remove (if new ones were added)
// This is not a super efficient process, but packages shouldn't have enough products for it to make much difference
// First, get the ones to re-add
List <Packages_Products_Supplier> ppsToAdd = ppsSnapshot // Creating a list of Package_Product_Suppliers where...
.Where(ppsSnap => !ppsCurrent // ...for each snapshot entry, it is NOT the case that...
.Any(ppsCurr => ppsCurr.ProductSupplierId == ppsSnap.ProductSupplierId)) // ...any current entry has that snapshot entry's ProductSupplierID
.ToList();
// Next, the ones to remove
List <Packages_Products_Supplier> ppsToDelete = ppsCurrent // Creating a list of Package_Product_Suppliers where...
.Where(ppsCurr => !ppsSnapshot // ...for each current entry, it is NOT the case that...
.Any(ppsSnap => ppsCurr.ProductSupplierId == ppsSnap.ProductSupplierId)) // ...any snapshot entry has that current entry's ProductSupplierID
.ToList();
// Add the needed entries back
foreach (Packages_Products_Supplier ppsA in ppsToAdd)
{
// LINQ to SQL doesn't let you re-add old entity objects, so we need to create copies to add back in place
Packages_Products_Supplier clone = new Packages_Products_Supplier
{
PackageId = ppsA.PackageId,
ProductSupplierId = ppsA.ProductSupplierId
};
dbContext.Packages_Products_Suppliers.InsertOnSubmit(clone);
}
// Delete the entries to undo
foreach (Packages_Products_Supplier ppsD in ppsToDelete)
{
// Deleting only works on entities from the current context, so need to grab them
// I'm sure this could be done in the ones-to-remove LINQ query above, but I couldn't manage it
Packages_Products_Supplier deleteTarget = dbContext.Packages_Products_Suppliers // Search in the table...
.Single(pps => // ...for the one entry, with...
pps.ProductSupplierId == ppsD.ProductSupplierId && //...the matching ProductSupplierID...
pps.PackageId == ppsD.PackageId); //... and the matching PackageID
dbContext.Packages_Products_Suppliers.DeleteOnSubmit(deleteTarget);
}
// Save changes. Phew!
dbContext.SubmitChanges();
}
// One more step if in Add mode.
// A package was inserted into the database initially (to get the add products half to work).
// So, if cancelling, we want to delete it this created package.
if (isAdd)
{
// Delete package
Package packToDelete = dbContext.Packages
.Single(p => p.PackageId == currentPackage.PackageId);
dbContext.Packages.DeleteOnSubmit(packToDelete);
dbContext.SubmitChanges(); // submit to the database
}
}
// Exit the form
DialogResult = DialogResult.Cancel;
this.Close();
}
