Please tell me how do we use parseint function or its equivalent in
vb.net.
And also tell me how do we hide and display controls during run-time
in vb.net? I need to access the rows of a table for rendering them
during run-time.

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There are two functions:
Integer.parse(stringWithNumber) which returns an integer but throws an
exception if the string is not a number.

The other one, which I recommend, is Integer.tryParse, use it like
this:
Dim outNumber as Integer
If not Integer.tryParse(stringWithNumber, outNumber) Then
outNumber = defaultValue
End If
----

If stringWithNumber is not parseable as an Integer outNumber is set to
0.

Thanks a lot Henrik!!
I was kinda stuck there...since am new to vb.net