Converting a regex Match to Int

Question

_{Friday, September 3, 2010 7:27 PM}

Is it really this difficult to change a regex Match into an integer?

Here's my current code...

string strRepeat = m.Groups[12].ToString();
int repeat = Convert.ToInt32(strRepeat);

m.Groups[12] is always a single digit. And changing it into a string is fine, but turning it into an integer is not working. I'm getting this error.

Input string was not in a correct format.

And when I try to directly change it instead of going from a string to int, I get this error.

Unable to cast object of type 'System.Text.RegularExpressions.Group' to type 'System.IConvertible'.

How do I change this into an integer that I can use?

All replies (3)

_{Friday, September 3, 2010 7:47 PM ✅Answered | 1 vote}

Are you sure m.Groups[12].ToString() returning valid string instead of object or etc.,. Okay debug the code and

see what is the actual value in the m.Groups[12]. Usually system will throw "Input string was not in a correct format." exception when you pass junk(other than integer) to the conversion method.

try this code and see

           int repeat  = 0;

            Int32.TryParse(m.Groups[12].ToString(), out repeat );

if the m.groups[12] has valid value , repeat will have the converted value else 0.

_{Friday, September 3, 2010 7:52 PM}

Yup. I miscounted twice. 13 has the valid digit.

Thanks!

_{Friday, September 3, 2010 7:52 PM}

If you're sure it's always a number, you can also just use int.Parse()