Visual Basic.net help!?

Question

how can i creat a messgebox wher the user can enter values... i wanna calculate the average grade of a class... a messgae box pop up the user enter the number of the grades the he enters a grade after the other! i just dont know how to create a message box that contains a text box and a ok buuton! 10x!

Answer 1

What you want is a inputbox. A messagebox displays text and does not return a value, where as a inputbox does.
Inputbox(Prompt as String, Title as String, DefaultResponse as String, XPos, YPos)

Not there are a couple of ways to preform the task that you want.
1)Go through a countrol counter loop.
2)Enter grades through a infinant loop.

The first way is the easiest.
We will create a counter as integer(for the loop) and a total amount as double(for the grade input).
So ...

Dim counter as Integer, total as Double

'Then initiate the controlled loop
'Lets say we want five(5) grades
'Make it loop through five(5) times
For counter = 1 To 5
'Add those grades together
total += Val(InputBox("What grade?", Me.Text))
Next
'Display the percentage
MsgBox(total / 5 & "%", , Me.Text)

-----------------------

The second way is not defining the amount of grades you want to user the input (infinate amount).

'Start by declaring your variables

Dim final As Integer
Dim counter As Integer = 0
Dim current As String

'Initiate an infanant loop

While 1 > 0
'Get the grade
current = InputBox("Grades", Me.Text)
'Test the string input
Select Case current
Case Is > "a"
MsgBox("Error, must a number value", , Me.Text)
'If it is blank show the grades
Case Is = ""
MsgBox(final / counter, , Me.Text)
'Exit the loop
Exit While
Case Else
'If the user entered a number
'Add the grades together
final += CInt(current)
'Get the input number
counter += 1
End Select
End While

Answer 2

Since you want a popup message to allow userinput, VB.NET has a function similar to a message box called an input box. The InputBox deals with user input by providing a popup message prompt with a title. There is provision for a default response if the user returns without entering.

dim str AS String
str = inputbox("Prompt","Title","Default String")

You can use this in your program by first using an input box to prompt the user for the number of values to be entered.. Then using a second input box in a FOR/NEXT loop to collect test scores...

Answer 3

Do you remember me? I answered your last question about linking forms in Visual Basic. I am the programmer that answered your last question. I have your answer. First add two textboxes to the form1. Insert a label that tells the user to enter the year we are in to the textbox1 and his/her birthday. and add a button to calculate the difference. Add a Label and make its name (lab) Subtract the textboxes heres how to do it :

Dim c as integer
c = textbox1.text
Dim g as integer
g = textbox2.text
lab.text = c - g
If lab.text = "7" then
messagebox.show ("first grade")
end If

If lab.text = "8" then
messagebox.show ("second grade")
end If

If lab.text = "9" then
messagebox.show ("third grade")
end If

So the code for showing a message box is

MessageBox.Show ("The thing you will write")

If you want to show a text that is in a textbox or label or anything for example :

lets have a textbox that user puts his name in it.write this code to the button :

dim name as string
name = TextBox1.text
MessageBox.Show (name)

So when you are showing the user a text in a textbox or something, dont use this ( " )

Note : I added you to my contacts.

Hope I helped !