How to Split 'abc123'

Hello,
Its tricky question...to check the numeric value from a given string well here is the solution i tried..there may be so many ways

 string str = "abc123";

           string iResultTemp = string.Empty;
           string sCurrentVal = string.Empty;
           string sResult = string.Empty;
           for (int i = 0; i < str.Length; i++)
           {
               try
               {
                   sCurrentVal = str.Substring(i, 1);
                   if(IsNumeric(sCurrentVal))
                   {
                       iResultTemp += sCurrentVal;
                   }
                   else
                   {
                       sResult += str.Substring(i, 1);
                   }
                  
               }
               catch 
               {
                  // Catch Exception
               }

           }

           int iFinalResult = int.Parse(iResultTemp);
           string sFinalResult = sResult;

This method is used to check that given string in numeric value or not

 public bool IsNumeric(string s)
        {
            try
            {
                Int32.Parse(s);
            }
            catch
            {
                return false;
            }
            return true;
        }