How do I add an object reference to an instance of an object. It seems that is the major issue here and not the code itself: ReDim Preserve items Sold (items Sold.Length)items Sold (items Sold. Length - 1) = newItemtotalSales += pricetotalItems += 1averageSale Price = totalSales / totalItems'Display the statisticslblTotalSales.Text = "Total Sales: " + totalblTotalItems.Text = "Total Items:11 + totalblAverageSale Price.Text = "Average Sale Prprice entered. Ple.seMessageBox.Show("Invalidnd IfException ThrownSystem.NullReference Exception: 'Object reference not set to aninstance of an object.'охShow Call Stack View Details Copy Details Start Live Share sessionException Settings✔Break when this exception type is thrownExcept when thrown from:Tag Sale.exeOpen Exception Settings Edit Conditions

The error "Object reference not set to an instance of an object" usually occurs when you try to…

se ReDim Preserve items Sold (items Sold.Length) itemsSold (items Sold. Length - 1) = newItem totalSales += price totalItems += 1 averageSale Price = totalSales / totalItems Display the statistics lblTotalSales.Text = "Total Sales: " + tota lblTotalItems.Text = "Total Items: " + tota lblAverageSale Price.Text = "Average Sale Pr price entered. Ple MessageBox.Show("Invalid Exception Thrown System.Null ReferenceException: 'Object reference not set to an instance of an object.' Show Call Stack View Details Copy Details Start Live Share session Exception Settings ✔Break when this exception type is thrown Except when thrown from: Tag Sale.exe Open Exception Settings Edit Conditions X

se ReDim Preserve items Sold (items Sold.Length) itemsSold (items Sold. Length - 1) = newItem totalSales += price totalItems += 1 averageSale Price = totalSales / totalItems Display the statistics lblTotalSales.Text = "Total Sales: " + tota lblTotalItems.Text = "Total Items: " + tota lblAverageSale Price.Text = "Average Sale Pr price entered. Ple MessageBox.Show("Invalid Exception Thrown System.Null ReferenceException: 'Object reference not set to an instance of an object.' Show Call Stack View Details Copy Details Start Live Share session Exception Settings ✔Break when this exception type is thrown Except when thrown from: Tag Sale.exe Open Exception Settings Edit Conditions X

Programming with Microsoft Visual Basic 2017

8th Edition

ISBN:9781337102124

Author:Diane Zak

Publisher:Diane Zak

Chapter11: Sql Server Databases

Section: Chapter Questions

Problem 15RQ

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The CompanyDataSet contains a table named Sales and a field named Income. Which of the following loops will accumulate the values in the Income field? a. For Each row As CompanyDataSet.Sales.Row In CompanyDataSet.Sales.Rows Sales.Row += row.Income Next row b. For Each row As CompanyDataSet.Sales.Row In CompanyDataSet.Sales.Rows dblTotal += row.Income Next row c. For Each row As CompanyDataSet.Sales.Row In CompanyDataSet.Rows dblTotal += row.Income Next row d. For Each row As CompanyDataSet.Sales In CompanyDataSet.Sales.Rows dblTotal += row.Income Next row
Products dataset contalns Price column. Which of the following is the correct way to Increase the ticket price by 7%? Select one: O summarise(Products , Price = Price * 0.07) O mutate(Products , Price = Price + Price 0.07) O mutate(Products, Price = Price 0.07) O summarise(Products , Price = Price + Price • 0.07)
How do you indicate that a column alias should be used?
LAB - Select horses with logical operators The Horse table has the following columns: • ID integer, primary key • RegisteredName - variable-length string • Breed - variable-length string • Height-decimal number • BirthDate - date Write a SELECT statement to select the registered name, height, and birth date for only horses that have a height between 15.0 and 16.0 (inclusive) or have a birth date on or after January 1, 2020.
Choose the SELECT statement that returns the given results from the Auto table below. ID Make Model Type Year Price 1 Toyota Camry sedan 2016 9800 2 Ford Escape crossover 2015 15900 3 Honda Civic sedan 2016 10200 4 Volkswagen Golf compact 2014 8800 5 Toyota RAV4 crossover 2016 12800 6 Toyota 4Runner suv 2015 16900 7 Honda CR-V crossover 2016 17900 Result : Honda 2 Toyota 3 Select Make, Count(Make) FROM Auto Group By Make; Select Make, COUNT(Make) From Auto Group By Make Having Count(Make) > 1; Select Make, Count(Make) From Auto Group By Make Having COUNT >1;
he Horse table has the following columns: ID - integer, primary key RegisteredName - variable-length string Breed - variable-length string Height - decimal number BirthDate - date Write a SELECT statement to select the registered name, height, and birth date for only horses that have a height between 15.0 and 16.0 (inclusive) or have a birth date on or after January 1, 2020.
INPUT TABLE You're given a orders table and the columns in the orders table are shown below: Orders Order_Id INT Type VARCHAR(10) Red_Shipping_ Days INT Scheduled_Shipping_Days INT Customer_Id INT Order _city VARCHAR(20) Order_Date DATE Order_Region VARCHAR(15) Order_State VARCHAR(20) Order _Status VARCHAR(20) Shipping_Mode VARCHAR(20) QUERY Calculate count of all the orders. Where Order_ State is Maharashtra Note - Use the alias of oc for count of orders Group the results by Type Order them by oc in ascending order. OUTPUT COLUMNS oc, Type
eBook Richardson Ski Racing (RSR) sells equipment needed for downhill ski racing. One of RSR's products is fencing used on downhill courses. The fence product comes in 150-foot rolls and sells for $215 per roll. However, RSR offers quantity discounts. The following table shows the price per roll depending on order size: Quantity Ordered From To Price per Roll 30 $215 31 60 $195 61 120 $175 121 and up $155 Click on the datafile logo to reference the data. DATA file (a) Use the VLOOKUP function with the preceding pricing table to determine the total revenue from these orders. (b) Use the COUNTIF function to determine the number of orders in each price bin. From To Price per Roll Number Orders 1. 30 $215 13 31 60 $195 15 61 120 $175 37 121 and up $155 107 172 Hide Feedback
SELECT COUNT(INV_NUMBER) AS 'Total Invoices', SUM(TOTAL_PRICE) AS 'Total Sales', MIN(TOTAL_PRICE) AS 'Minimum Customer Purchases', MAX(TOTAL_PRICE) AS 'Largest Customer Purchases', ROUND(AVG(TOTAL_PRICE), 2) AS 'Average Customer Purchases'FROM (SELECT CUS_CODE, LINE.INV_NUMBER AS INV_NUMBER, ROUND(SUM(LINE.LINE_PRICE * LINE.LINE_UNITS), 2) AS TOTAL_PRICEFROM INVOICE, LINE WHERE INVOICE.INV_NUMBER = LINE.INV_NUMBER GROUP BY CUS_CODE, LINE.INV_NUMBERORDER BY CUS_CODE, LINE.INV_NUMBER)INVOICELINE; i use this code but it didn't show the same value as in the question
You have been instructed to add a new student information to the students table. Because the student is new, he has no marks before, you should not add an amount to the CGPA. The Students table contains these columns: Student_id NUMBER(10) Student_name VARCHAR2(30) Student phone NUMBER(10) CGPA NUMBER(2,2) Which INSERT statements will accomplish your objective? O a. INSERT INTO students VALUES (365, 'Khalil',99554721, 0 ) O b. INSERT INTO students VALUES (365, 'Khalil',99554721, 'NO CGPA' ) O c. INSERT INTO students VALUES (365, 'Khalil',99554721, NULL ) O d. INSERT INTO students VALUES (365, 'Khalil',99554721) Which line of code has an error? 1. CREATE TABLE FRUITS VEGETABLES 2. FRUIT TYPE VARCHAR2, 3. FRUIT NAME CHAR (20), 4. QUANTITY NUMBER (4)); O a. 1 O b. 2 O c. 3
individual characters using their 0-based index. Hint: You will need to do this for checking all the rules. However, when you access a character .
Richardson Ski Racing (RSR) sells equipment needed for downhill ski racing. One of RSR's products is fencing used on downhill courses. The fence product comes in 150-foot rolls and sells for $215 per roll. However, RSR offers quantity discounts. The following table shows the price per roll depending on order size: Quantity Ordered From To Price per Roll 1. 30 $215 31 60 $195 61 120 $175 121 and up $155 Click on the datafile logo to reference the data. DATA file (a) Use the VLOOKUP function with the preceding pricing table to determine the total revenue from these orders. (b) Use the COUNTIF function to determine the number of orders in each price bin. From To Price per Roll Number Orders 30 $215 31 60 $195 61 120 $175 121 and up $155 172