hi guys,
i'm having error for my validation
control... i'm using both the validation control and my own code for the validation of the input entered to the same textbox. i added another validation code at the code behind and it
seems that my validation control now doesnt work. it can check if the
user does not enter any value or enter a non-integer value but then it
will automatically go to my validation code at the code behind.
the
error that i get is this "Conversion from string "" to type 'Double' is
not valid." when i tried changing the string to type double, it said
that "input string was not in a correct format"
below are my validation code
Public Sub addToCart_cmd(ByVal sender As Object, ByVal e As DataListCommandEventArgs)
If CType(e.CommandSource, Button).CommandName = "add" Then
lblError.Text = ""
...
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