Parsing hex values from strings.

[wyrd]

How can I parse a hex string into an integer value?

Example.

You can this for hex values:
int i = 0x00112233;

But this throws an error:
string str = "0x00112233";
int i = int.Parse(str);

Any ideas? Thanks in advance.

Update:
Ive tried using \x00112233 instead, and also (int) and Convert.ToInt32 for conversions (for both type of string values). Nothing has yet to work.

 

[wyrd]

Found solution:

Had to change 0x00112233 to 00112233 and then use System.Globalization.NumberStyles.HexNumber:

string str = "00112233";
int i = int.Parse(str, System.Globalization.NumberStyles.HexNumber);

 

[Nerseus]

You can also use Convert.ToInt32(str, 16). The 16 is the "fromBase" parameter, 16 for hex.

-Ner

 

[wyrd]

Hmm.. cool.

 

[dynamic_sysop]

have you tried replacing the 0x parts with &H ? eg:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        /// try replacing the 0x with &H
        Dim x As Integer = (&H112233) /// the 2 zeros will disappear
        /// or as a string
        Dim s As String = "&H00112233" /// same as &H112233
        Dim i As Integer = s /// no need to Parse.
        /// check the values returned...
        MessageBox.Show("the integer x looks like this >>> " & x & Environment.NewLine & "  the integer i looks like this >>> " & i)

    End Sub

 

[wyrd]

Hmm.. didnt try that, no. Ill stick with what I have, its more clear on what the code is doing and self documenting (as the actual hex value is in a file, not in the code). Thanks anyway though.