CODEWITHSUNDEEP
vb.net
Bart g
Bart g

Reputation: 585

“Use The New Keyword To Create An Object Instance”

I am not sure what is wrong with this part of the program. Every time I run it there is an error message saying:

Object reference not set to an instance of an object

On the line cc.RawDataString.IndexOf("B").

Code: 

Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As  System.EventArgs) Handles btnSubmit.Click
    Dim cc As New CreditCard

    Dim posB, posC1, posC2, posBlackSlash As Integer

    posB = cc.RawDataString.IndexOf("B")
    posC1 = cc.RawDataString.IndexOf("^")
    posC2 = cc.RawDataString.IndexOf("^", posC1 + 1)
    posBlackSlash = cc.RawDataString.IndexOf("/")

    cc.RawDataString = txtRawData.Text
    lblCCNumber.Text = cc.Number

    lblCCNumber.Text = cc.RawDataString.Substring(posB + 1, posC1 - posB - 1)
    lblLname.Text = cc.RawDataString.Substring(posC1 + 1, posBlackSlash - (posC1 + 1))
    lblFName.Text = cc.RawDataString.Substring(posBlackSlash + 1, posC2 - (posBlackSlash + 1))
    lblYear.Text = cc.RawDataString.Substring(posC2 + 1, 2)
    lblMonth.Text = cc.RawDataString.Substring(posC2 + 3, 2)

End Sub

Upvotes: 0

Views: 2242

Answers (1)

jdigital
jdigital

Reputation: 12266

It looks like you reference cc.RawDataString before you set it to something.

Upvotes: 3

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