// Initial method to load product groups and products
/* ----- METHOD ----- */
private void LoadProducts()
{
// Setting applications Culture info to always use comma as decimal separator
CultureInfo CI = (CultureInfo)Thread.CurrentThread.CurrentCulture.Clone();
CI.NumberFormat.NumberDecimalSeparator = ",";
Thread.CurrentThread.CurrentCulture = CI;
using (DataSet ds = new DataSet())
{
// Read in Productgroups from XML file
Stream stream = File.OpenRead(Environment.CurrentDirectory + @"\Resources\ProductGroups.xml");
ds.ReadXml(stream, XmlReadMode.InferSchema);
stream.Close();
DataTable dt = ds.Tables[0];
// assign global variable
ProductGroups = new ProductGroup[dt.Rows.Count];
// Loop through read data and populate array with new ProductGroup objects
int i = 0;
foreach (DataRow row in dt.Rows)
{
ProductGroups[i] = new ProductGroup(Int32.Parse(row.ItemArray[0].ToString()), row.ItemArray[1].ToString());
i++;
}
}
using (DataSet ds = new DataSet())
{
// Read in Products from XML File
Stream stream = File.OpenRead(Environment.CurrentDirectory + @"\Resources\Products.xml");
ds.ReadXml(stream, XmlReadMode.InferSchema);
stream.Close();
DataTable dt = ds.Tables[0];
// assign global variable
Products = new Product[dt.Rows.Count];
// Loop through read data and populate array with Product objects
int i = 0;
foreach (DataRow row in dt.Rows)
{
Products[i] = new Product(Int32.Parse(row.ItemArray[0].ToString()), Int32.Parse(row.ItemArray[1].ToString()), row.ItemArray[2].ToString(), Double.Parse(row.ItemArray[3].ToString()));
i++;
}
}
int x = selectablePanel.DisplayRectangle.Left + 5;
int y = selectablePanel.DisplayRectangle.Top + 10;
// Create UI Elements for Selectable Products/Groups
// Loop through product groups
int j = 0;
foreach (ProductGroup group in ProductGroups)
{
if (j > 0)
{
y += 25;
}
// For each group create label
Label groupLabel = new Label
{
Name = group.GetName() + "Label",
Text = group.GetName(),
Location = new Point(x, y),
Height = 20
};
// Array to store Product objects pertaining to each group
Product[] groupProds = Products.Where(o => o.GetGroupIndex() == group.GetIndex()).ToArray <Product>();
y += 20;
// Create Dropdown for each group
ComboBox groupDdwn = new ComboBox
{
Name = group.GetName() + "Ddwn",
Location = new Point(x, y),
DropDownStyle = ComboBoxStyle.DropDownList
};
// Loop through each Product in each group and add to dropdown
foreach (Product product in groupProds)
{
groupDdwn.Items.Add(product.GetName() + " " + product.GetPrice());
}
// Create one text box for each group to keep count of number of products user wishes to add
TextBox tbCount = new TextBox
{
Name = group.GetName() + "Count",
Width = 25,
Height = 20,
Location = new Point(groupDdwn.DisplayRectangle.Right + 25, y),
};
// Add controls to panel
selectablePanel.Controls.Add(groupLabel);
selectablePanel.Controls.Add(groupDdwn);
selectablePanel.Controls.Add(tbCount);
// Add eventhandlers to controls
tbCount.KeyPress += new KeyPressEventHandler(DisallowText);
groupDdwn.SelectedIndexChanged += new EventHandler(OnDdwnSelect);
tbCount.Invalidated += new InvalidateEventHandler(OnCountUpdate);
tbCount.Leave += new EventHandler(OnCountUpdate);
y += 5;
j++;
}
// Header label for count textbox
Label countLabel = new Label
{
Text = "Count",
Location = new Point(140, selectablePanel.DisplayRectangle.Top + 10)
};
selectablePanel.Controls.Add(countLabel);
}
// Event Handler method for adding products
/* ----- METHOD ----- */
private void AddProduct(object sender, EventArgs e)
{
// int to control index in 2D array
int x = 0;
// Loop through 2D array to find the next empty index
for (int i = 0; i < GroceryList.GetLength(0); i++)
{
if (GroceryList[i, 0] != null)
{
x++;
}
else
{
break;
}
}
// int to represent count of products entered by user
int count = 0;
// Empty Product object to be used for adding
Product addedProd = null;
// Loop through the controls of left hand panel
foreach (Control control in selectablePanel.Controls)
{
// if control is text box store entered number in count variable and leave 0 if nothing is entered
// reset the text to empty
if (control.GetType() == typeof(TextBox))
{
TextBox countTb = (TextBox)control;
Int32.TryParse(countTb.Text, out count);
countTb.Text = "";
}
// if control is dropdown
if (control.GetType() == typeof(ComboBox))
{
ComboBox prodCb = (ComboBox)control;
// ProductGroup object corresponding to selected dropdown group
ProductGroup addedProdGroup = ProductGroups.FirstOrDefault(pg => pg.GetName() == prodCb.Name.Substring(0, prodCb.Name.Length - 4));
// Set empty Product object to selected object based on group and selected item in dropdown
addedProd = Products.FirstOrDefault(p => p.GetGroupIndex() == addedProdGroup.GetIndex() && p.GetIndex() == prodCb.SelectedIndex);
// reset dropdown select to empty
prodCb.SelectedIndex = -1;
}
// If the count entered is larger than 0
if (count > 0)
{
// set the corresponding positions in 2D array to correspond to selected product and count thereof
GroceryList[x, 0] = addedProd;
GroceryList[x, 1] = count;
// Reset Count variable
count = 0;
// Update index variable
x++;
}
}
// Call method to present added products
LoadList(GroceryList);
}