String to byte (not array)... Quite simple (I think)

[Xmas79]

Hello,
I have a string:
MyString="1234".
I want to convert it to an integer or long.
MyLong=1234

Thx
Xmas

[Pirate]

Dim str As String = "1234"
Dim inter As Integer
inter = CType(str, Integer)

[Xmas79]

Very, very simple

[Slow_Learner]

Everything you wanted to know about type conversion functions:

ms-help://MS.VSCC/MS.MSDNVS/vblr7/html/vaGrpTypeConversion.htm

ms-help://MS.VSCC/MS.MSDNVS/vblr7/html/vafctctype.htm

[Lunatic3]

No!

Not that simple!
Try this:

Dim str As String = "1234"
Dim inter As Integer
inter = Val(str)

The previous code generates error if your string contains anything besides nummbers. For example if str="1234DF"

[Pirate]

Right Lunatic3 . The code I posted was based on his string value .

[Mr.No]

I thought val was no more to be used in VB.NET. What about

dim i as Integer
  dim s as string
  s = "1234"
 
  i = Integer.Parse(s)

[Lunatic3]

I thought val was no more to be used in VB.NET. What about

You could have easily tested what you said. 'Val' is still present in .NET and i dont know if it is for backward compatibility or not, however Integer.Parse still produces error if the string contains anything beside numbers.

[dynamic_sysop]

here's how to sort the integers out from the text in the string

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim str As String = "1234abc567xyz"
        Dim excluded As String
        Dim i As Integer
        Dim l As Integer

        For i = 0 To str.Length - 1
            If IsNumeric(str.Chars(i)) Then
                l = l & str.Chars(i)
            Else
                excluded = excluded & str.Chars(i)
            End If

        Next

        MessageBox.Show("numbers:" & l & Chr(10) & "letters:" & excluded)

    End Sub

[Mr.No]

Lunatic3

I didn't mean tp upset you. I was just wondering about the usage of Val() as it kind of doesn;t fit in with the new methods in .NET where most of the conversion methods are on objects Object.Method(). I would think its for backward compatibility only and Integer.Parse("2223") should be used instead. You can still put this in a Try block to catch erros.

[Pirate]

Val() is math function . Parse() is string manipulation function .

[Lunatic3]

I didn't mean tp upset you.

I didnt get upset at all mate

As you said 'val' does not fit into .NET way of thinking and it actually belongs to Microsoft.VisualBasic namespace. Still i found it easier and safer than trying to catch the error. Imagine you catch the error, then what you want to do with it? Are you going to apply a method to retrive the number out of that string? if so then you may use Val .

[PT Exorcist]

Originally posted by Pirate
Val() is math function . Parse() is string manipulation function .

val() is a math function LOCATED in the visualbasic namespace..so it needs vb backwards dll's

[Pirate]

Originally posted by PT Exorcist
val() is a math function LOCATED in the visualbasic namespace..so it needs vb backwards dll's

Still supported in VB.NET 2003 and I bet it will be for some ahead time .