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Splitting a string into different data types


You can split it into a String(), then use Int32.Parse to parse the last two into integers.

Dim tokens = text.Split(","c)
Dim part1 As String = tokens(0).Trim()
Dim part2 As String = tokens(1).Trim()
Dim part3 As Int32  =
Int32.Parse(tokens(2).Trim())
Dim part4 As Int32  =
Int32.Parse(tokens(3).Trim())

If you don't know if the format is valid you can use this super-safe version:

Dim part1 As String = tokens(0).Trim()
Dim part2 As String = tokens.ElementAtOrDefault(1)
If part2 IsNot Nothing Then part2 = part2.Trim()
Dim part3 As String = tokens.ElementAtOrDefault(2)
Dim part4 As String = tokens.ElementAtOrDefault(3)
Dim num1 As Int32? = New Nullable(Of Int32)
Dim num2 As Int32? = New Nullable(Of Int32)
If part3 IsNot Nothing Then
    Dim num As Int32
    If Int32.TryParse(part3.Trim(), num) Then
        num1 = num
    End If
End If
If part4 IsNot Nothing Then
    Dim num As Int32
    If Int32.TryParse(part4.Trim(), num) Then
        num2 = num
    End If
End If

I'm using a Nullable(Of Integer) to know whether or not the string could be parsed to Integer successfully. It has HasValue and Value properties. Use the latter if HasValue returns True.


Categories : Vb.Net

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