Error converting integer values to hex strings

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I have one TextBox with a decimal value typed in of "3039".
I want to convert that text to hexadecimal, with six characters (3 Bytes) into a second TextBox or Label.

The below code works:

VB

Dim iValue as Integer = Val(TextBox1.Text)
TextBox2.Text = iValue.ToString("X6")

BUT when I attempt to combine the two lines, the below doesn't work:

VB

TextBox2.Text = Val(TextBox1.Text).ToString("X6")

What am I missing?
VB.Net in Visual Studio Express 2013 for Windows Desktop

What I have tried:

Dim iValue as Integer = Val(TextBox1.Text)
TextBox2.Text = iValue.ToString("X6")

TextBox2.Text = Val(TextBox1.Text).ToString("X6")

Posted 17-Mar-17 10:03am

Myers97470

Updated 17-Mar-17 10:17am

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Dave Kreskowiak · Accepted Answer · 2017-03-17T10:17:00

And the error you say you're getting is ...... ?

It's better to leave those two lines as separate lines of code for debugging purposes. There is no need to combine them at all. You're not gaining anything by doing so.

You're also not allowing for any validation of the text in the TextBox to make sure it's even possible to get a valid value from it. Val will stop parsing a string on the first non-numeric character it sees.

Also, Val() is deprecated. It only exists for backwards compatibility with converted VB6 code. Use Integer.TryParse() instead.