From 7733b166115cc808070c355aeb34e21d215debb0 Mon Sep 17 00:00:00 2001
From: tanshu <tanshu@gmail.com>
Date: Thu, 12 Jan 2017 12:45:21 +0530
Subject: [PATCH] Fix: To prevent accidental double printing, the print bill
 and print kot buttons are greyed out once clicked till the end of the
 function

---
 .../Sales/SalesForm.cs                        | 46 +++++++++++--------
 1 file changed, 27 insertions(+), 19 deletions(-)

diff --git a/Tanshu.Accounts.PointOfSale/Sales/SalesForm.cs b/Tanshu.Accounts.PointOfSale/Sales/SalesForm.cs
index 698100f..64dc419 100644
--- a/Tanshu.Accounts.PointOfSale/Sales/SalesForm.cs
+++ b/Tanshu.Accounts.PointOfSale/Sales/SalesForm.cs
@@ -405,6 +405,7 @@ namespace Tanshu.Accounts.PointOfSale.Sales
         }
         private void btnPrintBill_Click(object sender, EventArgs e)
         {
+            btnPrintBill.Enabled = false;
             bool isPrinted = false, isVoid = false;
             if (_controller._voucher.VoucherID != Guid.Empty)
                 using (var bi = new VoucherBI())
@@ -414,35 +415,42 @@ namespace Tanshu.Accounts.PointOfSale.Sales
                     isVoid = dbVoucher.Void;
                 }
 
-            if (!_controller.CanSaveBill(isPrinted, isVoid))
-                return;
-            var amount = _controller._bill.NetAmount;
-            _controller.SetDiscount();
-            ShowInfo();
-            var printed = _controller.SaveAndPrintBill(isPrinted, amount);
-            if (!printed)
-                return;
-            if (_controller._editVoucherID.HasValue)
-                this.Close();
-            else
+            if (_controller.CanSaveBill(isPrinted, isVoid))
             {
+                var amount = _controller._bill.NetAmount;
+                _controller.SetDiscount();
                 ShowInfo();
-                FormState = SaleFormState.Waiting;
+                var printed = _controller.SaveAndPrintBill(isPrinted, amount);
+                if (printed)
+                {
+                    if (_controller._editVoucherID.HasValue)
+                        this.Close();
+                    else
+                    {
+                        ShowInfo();
+                        FormState = SaleFormState.Waiting;
+                    }
+                }
             }
+            btnPrintBill.Enabled = true;
+
         }
 
         private void btnPrintKot_Click(object sender, EventArgs e)
         {
+            btnPrintKot.Enabled = false;
             var printed = _controller.SaveAndPrintKot();
-            if (!printed)
-                return;
-            if (_controller._editVoucherID.HasValue)
-                this.Close();
-            else
+            if (printed)
             {
-                ShowInfo();
-                FormState = SaleFormState.Waiting;
+                if (_controller._editVoucherID.HasValue)
+                    this.Close();
+                else
+                {
+                    ShowInfo();
+                    FormState = SaleFormState.Waiting;
+                }
             }
+            btnPrintKot.Enabled = true;
         }
 
         private void btnQuantity_Click(object sender, EventArgs e)