CODEWITHSUNDEEP
vb.net
Sparrow
Sparrow

Reputation: 305

String not getting concatenated in VB

I declared a string s like this

Dim s As String=""

And I am trying to build a keylogger that e-mails String "s" by concatenating keystrokes. A sample code snippet is as follows

Dim hotkey5 As Boolean
        hotkey5 = GetAsyncKeyState(Keys.E)
        If hotkey5 = True Then
            String.Concat(s, "E")
        End If

But nothing is getting concatenated to String s. Why is that so?

Upvotes: 0

Views: 212

Answers (2)

user3539722
user3539722

Reputation: 60

Dim hotkey5 As Boolean
hotkey5 = GetAsyncKeyState(Keys.E)
If hotkey5 = True Then
    s+="E"
End If

Synopsis

VB.Net provides an ability to add or concatenate two strings using + operator. It also can be used many way. VB.Net provides an ability to add or concatenate two strings using + operator. It also can be used many way. Let Dim Valu1 as String=”1” and Dim Valu2 as String=”2”. Then Dim concatenate = Valu1+Valu2. So the value will be ”12”. Or we can, Dim concatenate = Valu2+Valu1. Then the value will be ”21”. So it is pretty simple as that

Upvotes: -1

Preet Sangha
Preet Sangha

Reputation: 65555

In .net Strings are immutable. So you need a new string to hold the results of the the concatenation - which is the concatenated string.

    Dim hotkey5 As Boolean
    hotkey5 = GetAsyncKeyState(Keys.E)
    If hotkey5 = True Then
        s= String.Concat(s, "E")
    End If

Upvotes: 2

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