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I have a program that uses a database to display information. The user is allowed to enter in information and save it to the database. How can I code something that will check what a user enters in a textbox with a value already in the database. If it is not in the database I will display a...

Hey all I have a database that displays a Cell phone provider, the phone name, its serial number, and its unit cost. I want to make an array that will add up all the phones Unit Cost and display them in a label. The user will be able to type in a serial number in a textbox, and if the serial...

I'm working on a database and it displays the output in four columns on a multiline textbox on a seperate form. Everything is displaying correctly except I can't get the Unit Cost column to display a dollar sign for the output. I've used: txtInventory.AppendText(String.Format("{0:C}"...

Hello all, I am having one problem with an app i'm trying to work on for school. In the app we have a textbox, listbox and an add button. The user will type in a statement in the textbox and when the add button is pressed it will be displayed in the listbox. With each statement added the...

Hey I'm new here and have an application i'm working on, i've just started with Visual Basic. One of the exercises asked us to make a List Box that uses a Loop. The user can type a number (The Upper Limit) into a text box and then the ListBox will go through the numbers until the upper limit is...