Question

I’m receiving an error which looks like it is due to an error using hexidecimal inputs in a uint field. It occurs on both versions of the web service I’m working on.

System.ArgumentException: Cannot convert 0x2 to System.UInt32.
Parameter name: type ---> System.FormatException: Input string was not in a correct format.

However, my coworker says that it works for him on a previous version of the web service I have, when he calls it using C++, but it doesn’t work on the current version I’m working on.

Has anyone experienced this?

Answer 1

Are you using something like this in your code? If not, try to implement this (replace “CF01” with your input value):

int i = Convert.ToInt32("CF01", 16);

Edit:

For the particular case with the 0x prefix:

public int32 GetInt32FromHex(string h) {
    h = h.substring(2, (h.length - 2));
    return convert.ToInt32(h, 16);
}