Please explain the following - Explain what a one-dimensional array and its components are. Explain why arrays are useful, and how they are created within Visual Basic .NET. Finally, explain how two-dimensional arrays are different than one-dimensional arrays. Thank you

Using visual basic .net, please develope grade application and save all files as "grade app"in a zip folder - Design an application like the one in the attachment using letter grade (A >= 90, B = [80..89], C = [70..79], D = [60..69], and F = [0..59]) to a student's Assignment based on a test score and other criteria. Use a NumericUpDown control to allow the instructor's assistant to enter...

Please create this application using visual basic .net - Design and develop a program that validates the value a user enters into a TextBox control to ensure that the entry is a valid telephone number. The application should accept a maximum of 12 characters. When the user clicks a button, the program should determine if the entry is of the form 999-999-9999, where the character 9 represents any n...

Access question - Start Access, and then open the FirmPays database. Open the query named " June 2". View the query in SQL and answer the following questions. Explain your answers. Which tables are used in the query? Which fields are displayed in the query results? What type of join is used between the tables? What selection criteria are used? Then write a query in SQL in the F...

Please fix minicalc using visual basic.Net - The MiniCalc application was designed to perform basic math calculations: +, -, *, /. However, in its present form, this application needs some improvements. 1. Test all operators with the values 8 and 2 to make sure it works as expected. 2. Test the program with 99999 + 99999. This should raise a 'System.OverflowException' exception. 3. Mod...