Moved numpad control to Tanshu.Common. Billing feature complete. Delete not working as expected

Signed-off-by: unknown <tanshu@.(none)>

Tanshu.Accounts.Contracts/Data Contracts Display/BillInventoryBO.cs

@@ -11,31 +11,9 @@ namespace Tanshu.Accounts.Contracts
 
         public string Name { get; set; }
 
-        private decimal price;
-        public decimal Price
-        {
-            get { return price; }
-            set
-            {
-                if (value <= 0)
-                    throw new ArgumentException("Price has to be non-negative greater than zero.");
-                else
-                    price = value;
-            }
-        }
+        public decimal Price { get; set; }
 
-        private decimal quantity = 1;
-        public decimal Quantity
-        {
-            get { return quantity; }
-            set
-            {
-                if (value <= 0)
-                    throw new ArgumentException("Quantity has to be non-negative greater than zero.");
-                quantity = value;
-
-            }
-        }
+        public decimal Quantity { get; set; }
 
         private decimal discount = 0;
         public decimal Discount
@@ -57,7 +35,7 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                return quantity * price * (1 - discount) * (1 + ServiceCharge) * Tax;
+                return Quantity * Price * (1 - discount) * (1 + ServiceCharge) * Tax;
             }
         }
 
@@ -66,7 +44,7 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                return quantity * price * (1 - discount) * ServiceCharge;
+                return Quantity * Price * (1 - discount) * ServiceCharge;
             }
         }
 
@@ -74,7 +52,7 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                return quantity * price * discount;
+                return Quantity * Price * discount;
             }
         }
 
@@ -82,7 +60,7 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                return quantity * price * (1 - discount);
+                return Quantity * Price * (1 - discount);
             }
         }
 
@@ -103,14 +81,14 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                return price * quantity * (1 - discount) * (1 + ServiceCharge) * (1 + Tax);
+                return Price * Quantity * (1 - discount) * (1 + ServiceCharge) * (1 + Tax);
             }
         }
         public decimal Additional
         {
             get
             {
-                return quantity - printed;
+                return Quantity - printed;
             }
         }
 
@@ -120,15 +98,29 @@ namespace Tanshu.Accounts.Contracts
         {
             get
             {
-                string output = string.Format("{0} @ Rs. {1:#.##}", Name, price);
+                string output = string.Format("{0} @ Rs. {1:#.##}", Name, Price);
                 if (discount != 0)
                     output += string.Format(" - {0:#.##%}", discount);
+                foreach (var item in Modifiers)
+                    output += string.Format("\n\r  --  {0}", item.Name);
                 return output;
+
+                //if (Price == 0)
+                //    return string.Format(" -- {0}", Name);
+                //string output = string.Format("{0} @ Rs. {1:#.##}", Name, Price);
+                //if (discount != 0)
+                //    output += string.Format(" - {0:#.##%}", discount);
+                //return output;
             }
         }
+        public override string ToString()
+        {
+            return string.Format("{0} - {1}", ProductID, Name);
+        }
         public IList<Modifier> Modifiers { get; set; }
         public BillInventory()
         {
+            Quantity = 1;
             printed = 0;
             isNew = true;
             Modifiers = new List<Modifier>();

Tanshu.Accounts.Contracts/Data Contracts Display/BillItemKey.cs

@@ -5,10 +5,11 @@ namespace Tanshu.Accounts.Contracts
 {
     public class BillItemKey
     {
-        public BillItemKey(int productID, bool isNew)
+        //Old = 0, New = 1, Modifiers = 2+
+        public BillItemKey(int ProductID, bool IsNew)
         {
-            ProductID = productID;
-            IsNew = isNew;
+            this.ProductID = ProductID;
+            this.IsNew = IsNew;
         }
 
         public int ProductID
@@ -41,7 +42,7 @@ namespace Tanshu.Accounts.Contracts
         {
             if (object.ReferenceEquals(null, a))
                 return object.ReferenceEquals(null, b);
-            
+
             if (!(a is BillItemKey))
                 return false;
             if (!(b is BillItemKey))