Question

I have a button and i want it to check for a condition to display different msgbox.

Below is my code:

 Dim a As String = "";

Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    If ((a = "a") & (DetailsSelectedComment.Visible = True)) Then
        MsgBox("Have")
    Else
        MsgBox("No have")
    End If

End Sub

But i got the following error when i clicked on the button.

“Input string was not in a correct format. “

Answer 1

First remove the ";" from your code while declaring the variable "a"
Dim a As String = ""; to Dim a As String = ""

And for making and operations in VB.Net we should use AND and ANDALSO