private void CodeTextBox_TextChanged(object sender, EventArgs e) { _modelPurchase.ProductCode = codeTextBox.Text; if (_purchaseManager.IsCodeExits(_modelPurchase)) { availAbleQtyTextBox.Text = _purchaseManager.AvaiableQuantity(_modelPurchase).ToString(); previousUnitTextBox.Text = _purchaseManager.PreviousUnitPrice(_modelPurchase).ToString(); previousMrpTextBox.Text = _purchaseManager.PreviousMRP(_modelPurchase).ToString(); } else { availAbleQtyTextBox.Text = "0"; previousUnitTextBox.Text = "0"; previousMrpTextBox.Text = "0"; return; } //if (string.IsNullOrEmpty(availAbleQtyTextBox.Text)) //{ // availAbleQtyTextBox.Text = 0.ToString(); //} //else //{ // availAbleQtyTextBox.Text = _purchaseManager.AvaiableQuantity(_modelPurchase).ToString(); //} //availAbleQtyTextBox.Text = _purchaseManager.Qty(_modelPurchase).ToString(); //int qty = 0; ////int availableQty = 0; //for (int i = 0; i < _purchaseManager.AvaiableQuantity(_modelPurchase).Count; i++) //{ // qty = i + _modelPurchase.Quantity; // //availableQty = qty + 1; //} //availAbleQtyTextBox.Text = qty.ToString(); }