How to convert hexadecimal "string" into actual hexadecimal value in .NET?

Question

Possible Duplicate:
How to convert numbers between hexadecimal and decimal in C#?

I need to be able to take a hexadecimal string and convert it into actual hexadecimal value in .NET. How do I do this?

For instance, in Delphi, you can take string of "FF" and add the dollar sign as follow to it.

tmpstr := '$'+ 'FF';

Then, convert tmpstr string variable into an integer to get the actual hexidecimal. The result would be 255.

Answer 1

Assuming you are trying to convert your string to an int:

var i = Int32.Parse("FF", System.Globalization.NumberStyles.HexNumber)

Your example 1847504890 does not fit on an int, however. Use a longer type instead.

var i = Int64.Parse("1847504890", System.Globalization.NumberStyles.HexNumber)

Answer 2

Very simple:

int value = Convert.ToInt32("DEADBEEF", 16);

Answer 3

You can do it by following

string tmpstr = "FF";
int num = Int32.Parse(tmpstr, System.Globalization.NumberStyles.HexNumber);

You can also see the link Converting string to hex

Answer 4

int hexval = Convert.ToInt32("FF", 16);