Globalization(Do and Don't) In .NET

       String Comparison

Do
 string str1 = "Apple"; string str2 = "Æble"; int result1 = String.Compare(str1, str2, CultureInfo.InvariantCulture,                                                  CompareOptions.IgnoreCase);

Don't
  string str1 = "Apple";
  string str2 = "Æble";
  int result1 = String.Compare(str1, str2);

 Do
   const string input = "interesting";
   bool result =input.Equals("INTERESTING",            StringComparison.InvariantCultureIgnoreCase);

 Don't
    const string input = "interesting";
    bool comparison = input.ToUpper() == "INTERESTING";
               
 Do            
    string newString =     s.ToUpper(CultureInfo.InvariantCulture);

 Don't      
    string newString = s.ToUpper();
    

                String Sorting

 Do
     StringComparer invCmp = StringComparer.InvariantCulture;
     var str=new List<string> {"a", "b", "c"};
     str.Sort(invCmp);

 Don't 
     var str=new List<string> {"a", "b", "c"};
     str.Sort();

Number Formatting

 Do
     int i = 100;
     string res = i.ToString(CultureInfo.InvariantCulture);
     string res2 = Convert.ToString(CultureInfo.InvariantCulture);

 Don't
      int i = 100;
      string res = i.ToString();
      string res2 = Convert.ToString();

  Do
       double number = 123.456;
       string convertToString =    Convert.ToString(number,  CultureInfo.InvariantCulture);
       string numberToString = number.ToString(CultureInfo.InvariantCulture);
       string stringFormat = String.Format(CultureInfo.InvariantCulture, "{0}",          number);
 Don't              
        double number = 123.456;
        string convertToString = Convert.ToString(number);
        string numberToString = number.ToString();
        string stringFormat = String.Format("{0}", number);
                                               

Calendar Differences

Date Formatting

  Do
        string s1 = "10/31/2012";
       DateTime date = DateTime.Parse("10 / 31 /  2012",  CultureInfo . InvariantCulture);     
       
 Don't
        string s1 = "10/31/2012";
        DateTime date = DateTime.Parse("10 / 31 / 2012");

 Do
        string datenew = Convert.ToDateTime("10/31/2012", CultureInfo.InvariantCulture).ToString();           

Don't
        string datenew = Convert.ToDateTime("10/31/2012").ToString();                 
 Do
        DateTime datenew = Convert.ToDateTime("10/31/2012", CultureInfo.InvariantCulture);     
       
 Don't
         DateTime datenew = Convert.ToDateTime("10/31/2012");

Time Formatting

             The easiest and most efficient way of doing time formatting in the .NET world is to take advantage of theDateTime structure that provides methods such as DateTime.ToString and DateTime.Parse. These methods allow you to perform culture-sensitive operations on a DateTime object.
 Do
      string conv = DateTime.Now.ToShortTimeString();
      DateTime newDate = DateTime.Parse(conv, CultureInfo.InvariantCulture);
Don't
      string conv = DateTime.Now.ToShortTimeString();
      DateTime newDate = DateTime.Parse(conv);

Currency Formatting

     Do
      string conv2 = "12,34,56,789.00";
      decimal newd = Convert.ToDecimal(conv2,CultureInfo.InvariantCulture);
    Don't
       string conv2 = "12,34,56,789.00";
       decimal newd = Convert.ToDecimal(conv2);