// ------------Added by Wei Guang Yan----------------
// method of Updating suplier's name to database
public void UpdateSupplier(string txtUpdate)
{
// Initialization for messagebox
string message;
string title = "Supplier Update";
MessageBoxButtons button = MessageBoxButtons.OK;
MessageBoxIcon icon = MessageBoxIcon.Warning;
// Excute updating
int id = Convert.ToInt32(comboBox2.SelectedValue);
bool flag = SuppliersDB.UpdateSupplier(id, txtUpdate);
// Check whether updating is successful, and show message
if (flag == true)
{
int index = comboBox2.SelectedIndex;
comboBox2.DataSource = SuppliersDB.GetSuppliers();
comboBox2.DisplayMember = "SupName";
comboBox2.ValueMember = "SupplierId";
comboBox2.SelectedIndex = index;
message = "The supplier is updated successfully!";
icon = MessageBoxIcon.None;
}
else
{
message = "Error: Fail to update supplier!\n Please try again or contact IT support.";
icon = MessageBoxIcon.Error;
}
MessageBox.Show(message, title, button, icon);
}
// ------------Added by Wei Guang Yan----------------
// Method of inserting suplier's name to database
public void AddSupplier(string txtAdd)
{
// Innitialize for messagebox
string message;
string title = "New Product Insert";
MessageBoxButtons button = MessageBoxButtons.OK;
MessageBoxIcon icon;
// Generate new supplier Id based on max id in database
int id = SuppliersDB.GetMaxId() + 1;
// Add new item to database
bool flag = SuppliersDB.AddSupplier(id, txtAdd);
// Check whether adding excution is successful, and show message
if (flag == true)
{
comboBox2.DataSource = SuppliersDB.GetSuppliers();
comboBox2.DisplayMember = "SupName";
comboBox2.ValueMember = "SupplierId";
comboBox2.SelectedIndex = comboBox2.Items.Count - 1;
txtAddItem.Text = "";
message = "The supplier is added successfully!";
icon = MessageBoxIcon.None;
}
else
{
message = "Error: Fail to add new supplier!\n Please try again or contact IT supports.";
icon = MessageBoxIcon.Error;
}
MessageBox.Show(message, title, button, icon);
}
//update the supplier list when new product selected
private void lstProducts_SelectedIndexChanged_1(object sender, EventArgs e)
{
currentProduct = ProductDB.getProductById(Convert.ToInt32(lstProducts.SelectedValue));
supplierList = SuppliersDB.GetSuppliers();
//concurrency issue occurs if product is deleted from DB
LoadProductSuppliers(currentProduct.ProductId);
}
// Tab Two Changed (by using ALL, EDIT, ADD btn): change UI appearance accordingly
private void twoTab_SelectedIndexChanged(object sender, EventArgs e)
{
twoBtnViewAll.BackColor = Color.DarkCyan;;
twoBtnEdit.BackColor = Color.DarkCyan;
twoBtnAdd.BackColor = Color.DarkCyan;
twoBtnSave.Visible = true;
if (twoTab.SelectedIndex == 0)
{
twoBtnSave.Visible = false;
// 'ALL' tab, load all Product Supplier data and fill DataSource
_psList = Products_suppliersDB.GetAllProductSupplierWithNames().OrderBy(ps => ps.ProdName).ToList();
// use List to make a SortableBindingList
var _sortableList = new SortableBindingList <ProductSupplierWithName>(_psList);
productSupplierWithNameBindingSource.DataSource = _sortableList;
// databinding for combo boxes
suppliersBindingSource.DataSource = SuppliersDB.GetSuppliers().OrderBy(s => s.SupName);
productsBindingSource.DataSource = ProductsDB.GetProducts();
}
else if (twoTab.SelectedIndex == 2)
{
// 'ADD' tab
// select nothing when load
twoCmbAddProdName.SelectedIndex = -1;
twoCmbAddSuppName.SelectedIndex = -1;
}
// 'EDIT' tab
}
/// <summary>
/// Load supplier tab data
/// </summary> Raymond
private void loadSupplierTab()
{
supplierCount = 0;
suppliersDetails = SuppliersDB.GetSuppliers();
supplierId.Text = suppliersDetails[supplierCount].SupplierId.ToString();
supplierName.Text = ProcessNullSupplierName(suppliersDetails[supplierCount].SupName);
}
/// <summary>
/// Update All List of Infos
/// </summary>
private void UpdateAllInfos()
{
AllPackages = PackagesDB.GetPackages();
AllProducts = ProductsDB.GetProducts();
AllSuppliers = SuppliersDB.GetSuppliers();
ProSupLinkages = ProSupDB.GetProSups();
PacProSupLinkages = PacProSupDB.GetPacProSup();
}
//resets the form (useful to update the datagrid for changes/new submissions)
private void clearContent()
{
supIDTextBox.Clear();
supNameTextBox.Clear();
//resets the datagrid
suppliers = SuppliersDB.GetSuppliers();
supplierDataGridView.DataSource = suppliers;
}
// Edit existing supplier - Raymond
private void btnEdit_Click_1(object sender, EventArgs e)
{
frmEditSuppliers editSuppliers = new frmEditSuppliers(suppliersDetails[supplierCount]);
DialogResult result = editSuppliers.ShowDialog();
suppliersDetails = SuppliersDB.GetSuppliers();
supplierId.Text = suppliersDetails[supplierCount].SupplierId.ToString();
supplierName.Text = ProcessNullSupplierName(suppliersDetails[supplierCount].SupName);
}
// Convenient Method: find if there is a duplicated supplier name in DB, return bool
private bool FindDuplicatedSupplierName(string supplierName)
{
if (SuppliersDB.GetSuppliers().Find(s => s.SupName == supplierName) == null)
{
return(false);
}
else
{
MessageBox.Show("The supplier you input already exists.", "Duplicated Name");
return(true);
}
}
private void btnSave_Click(object sender, EventArgs e)
{
frmModifySup addSupplierForm = new frmModifySup();
addSupplierForm.addSuppliers = true;
DialogResult result = addSupplierForm.ShowDialog();
if (result == DialogResult.OK)
{
dataGridView1.DataSource = SuppliersDB.GetSuppliers();
}
}
//Adding a new supplier - Raymond
private void btnNew_Click(object sender, EventArgs e)
{
frmAddSupplier addSupplier = new frmAddSupplier();
DialogResult result = addSupplier.ShowDialog();
suppliersDetails = SuppliersDB.GetSuppliers();
if (result == DialogResult.OK)
{
supplierCount = suppliersDetails.Count - 1;
}
supplierId.Text = suppliersDetails[supplierCount].SupplierId.ToString();
supplierName.Text = ProcessNullSupplierName(suppliersDetails[supplierCount].SupName);
}
/**********************************************************
*
* Form set-up methods
*
*
* ********************************************************/
//get products from database and load the products in the list box
private void LoadProducts(int selectedProductId = -1)
{
//get the product and supplier lists from database
productsList = ProductDB.GetProducts();
supplierList = SuppliersDB.GetSuppliers();
//populate product list box
lstProducts.DataSource = productsList;
//no currentProduct object exists, create one by selecting first item in the lstProducts
if (selectedProductId == -1)
{
lstProducts.SelectedIndex = 0;
currentProduct = ProductDB.getProductById(Convert.ToInt32(lstProducts.SelectedValue));
}
}
// ----- 4TH NAV BTN: Suppliers -----
// Tab Four Changed (by using ALL, EDIT, ADD btn): change UI appearance accordingly
private void fourTab_SelectedIndexChanged(object sender, EventArgs e)
{
fourBtnSave.Visible = true;
fourBtnAll.BackColor = Color.DarkCyan;
fourBtnEdit.BackColor = Color.DarkCyan;
fourBtnAdd.BackColor = Color.DarkCyan;
if (fourTab.SelectedIndex == 0)
{
// view ALL mode: hide save btn
fourBtnSave.Visible = false;
// bind data to gridview's binding source
var suppliersList = SuppliersDB.GetSuppliers();
var _sortableSuppliers = new SortableBindingList <Suppliers>(suppliersList);
suppliersBindingSource.DataSource = _sortableSuppliers;
}
}
// display suppliers after getting list by DB method
private void DisplaySuppliers()
{
suppliersList = SuppliersDB.GetSuppliers();
if (suppliersList != null) // if we have product suppliers to display
{
lstView.Items.Clear(); //start with empty list box
foreach (Suppliers sup in suppliersList)
{
lstView.Items.Add(sup);
}
}
else // null this supplier does not exist - need to refresh combo box
{
MessageBox.Show("There is no supplier to display.");
}
}
// UPDATE button click, visibility and read-only toggle
private void btnProductEdit_Click(object sender, EventArgs e)
{
List <Products_Suppliers> currentProducts = new List <Products_Suppliers>();
btnAcceptEdit.Visible = true;
btnProductEdit.Visible = false;
pnlUpdate.Visible = true;
txtProdName.ReadOnly = false;
txtProdName.Enabled = true;
lstSuppliers.Enabled = true;
suppliersList = SuppliersDB.GetSuppliers();
foreach (Suppliers sup in suppliersList)
{
cboSupplier.Items.Add(sup);
}
}
private void btnUpdate_Click(object sender, EventArgs e)
{
var cells = dataGridView1.CurrentRow.Cells;
string rowId = cells[0].Value.ToString();
string rowId1 = cells[1].Value.ToString();
//int rowId = Convert.ToInt32(cells[0].Value);
var selectedSupplierID = SuppliersDB.GetSuppliers(rowId);
frmModifySup modifySupplierFrm = new frmModifySup();
modifySupplierFrm.addSuppliers = false;
modifySupplierFrm.modifySuppliers = selectedSupplierID;
DialogResult result = modifySupplierFrm.ShowDialog();
if (result == DialogResult.OK)
{
dataGridView1.DataSource = SuppliersDB.GetSuppliers();
}
}
// dropdown list selected: filter for second dropdown list
private void twoCmbAddProdName_SelectedIndexChanged(object sender, EventArgs e)
{ // if nothing selected, return
if (twoCmbAddProdName.SelectedIndex == -1)
{
return;
}
// filtering
var suppliers = SuppliersDB.GetSuppliers();
var prodSupps = Products_suppliersDB.GetProductsSuppliers();
var _psHasIds = prodSupps.FindAll(ps => ps.ProductId == (int)twoCmbAddProdName.SelectedValue).Select(ps => ps.SupplierId);
List <Suppliers> filteredSupp = new List <Suppliers>();
foreach (var supp in suppliers)
{
if (!_psHasIds.Contains(supp.SupplierId))
{
filteredSupp.Add(supp);
}
}
suppliersBindingSource.DataSource = filteredSupp;
twoCmbAddSuppName.SelectedIndex = -1;
}
// ------------Added by Wei Guang Yan----------------
// Radio-button-Click event on "Suppliers"----Edit/Add supplier
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
// Set panels visibilities, show panel related to Supliers "edit" and "Add"
//this.panel14.SendToBack();
//panelProductSuppliers.Hide();20190604
//Show panel13
this.panel13.BringToFront();
//this.panel13.Visible = true;20190604
// Set datasource of combobox to "Suppliers"
comboBox2.DataSource = SuppliersDB.GetSuppliers();
comboBox2.DisplayMember = "SupName";
comboBox2.ValueMember = "SupplierId";
// Set desplay of relevant labels and buttons, and clear "Add" textbox
panelStatus = PanelStatus.Suppliers;
lblItemList.Text = "Suppliers";
lblUpdateItem.Text = "Update Supplier:";
btnUpdate.Text = "Update Supplier";
lblAddItem.Text = "Add Supplier:";
btnAdd.Text = "Add Supplier";
txtAddItem.Clear();
/*20190604 commented
* RadioButton rb = sender as RadioButton;
* if (rb != null)
* {
* if (rb.Checked)
* {
* // Only one radio button will be checked
* //Console.WriteLine("Changed: " + rb.Name);
* //datagridview2.source = DataLayer.SupplierDB.GetSuppliers();
* }
* }
*/
}
private void fourBtnSave_Click(object sender, EventArgs e)
{
if (fourTab.SelectedIndex == 1) // EDIT MODE
{
// get current Supplier obj
var currentSupplier = SuppliersDB.GetSuppliers()
.Find(s => s.SupplierId == Convert.ToInt32(fourTxtEditSuppId.Text));
// initialize new Suppliers obj
Suppliers newSupplier;
// do validation: no empty name, no duplicated name
if (Validator.TBIsEmpty(fourTxtEditSuppName, "Supplier Name") ||
FindDuplicatedSupplierName(fourTxtEditSuppName.Text))
{
// validation failed, rollback to old name, do nothing
fourTxtEditSuppName.Text = currentSupplier.SupName;
fourTxtEditSuppName.SelectAll();
return;
}
else
{
// validation passed, create new Suppliers obj
newSupplier = new Suppliers {
SupName = fourTxtEditSuppName.Text
}
};
// try update
try
{
int rowsAffected = SuppliersDB.UpdateSupplier(currentSupplier, newSupplier);
MessageBox.Show($"{rowsAffected} record was successfully updated.", "Congratulations");
}
catch (Exception ex)
{
MessageBox.Show($"Cannot complete update due to error: {ex.Message}.");
}
}
else if (fourTab.SelectedIndex == 2) // ADD MODE
{
// validate input: no empty name, no duplicated name
if (!Validator.TBIsEmpty(fourTxtAddSuppName, "Supplier Name") &&
Validator.TBHasNonNegativeInt(fourTxtAddSuppId, "Supplier Id") &&
!FindDuplicatedSupplierName(fourTxtAddSuppName.Text))
{
// validation passed, create new Suppliers obj
var newSupplier = new Suppliers
{
SupName = fourTxtAddSuppName.Text,
// PK SuppId is not auto-increment, need to assign an new id
SupplierId = Convert.ToInt32(fourTxtAddSuppId.Text)
};
// try to add to DB
try
{
int id = SuppliersDB.AddSupplier(newSupplier);
MessageBox.Show($"New supplier was successfully added, supplier id: {id}.",
"Congratulations");
fourTxtAddSuppId.Clear();
fourTxtAddSuppName.Clear();
}
catch (Exception ex)
{
MessageBox.Show($"Cannot add new supplier due to duplicated id. Error detail: {ex.Message}.");
}
}
}
}
private void FrmSupplier_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = SuppliersDB.GetSuppliers();
}
// generate id btn clicked: generate a new supplier id, fill in textbox
private void fourBtnGenerateSuppId_Click(object sender, EventArgs e)
{
int newId = SuppliersDB.GetSuppliers().Max(s => s.SupplierId) + 1;
fourTxtAddSuppId.Text = newId.ToString();
}
//builds datagrid on load
private void frmSuppliers_Load(object sender, EventArgs e)
{
this.WindowState = FormWindowState.Maximized;
suppliers = SuppliersDB.GetSuppliers();
supplierDataGridView.DataSource = suppliers;
}
private void FrmSupplier_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = SuppliersDB.GetSuppliers();
dataGridView1.Rows[0].Selected = true;
}