While debugging an application or doing code review, sometimes if there is a string not-null or not-empty validation check, then it's obvious that we may ignore those negate conditions (!).
For example,
  1. if (!string.IsNullOrWhiteSpace(inputString))
  2. {
  3. // do someting here
  4. }
To ignore these we generally adopt a rule to check with negate condition using the (== false) command.
For example,
  1. if (string.IsNullOrWhiteSpace(inputString) == false)
  2. {
  3. // do someting here
  4. }
It's better to use StringUtility methods with all the possible string validation checks in one place, and use them in multiple projects as-is.
Some of the frequently used utility methods:
  1. public static bool AreTrimEqual(string input1, string input2)
  2. {
  3. return string.Equals(input1?.Trim(), input2?.Trim(), StringComparison.InvariantCultureIgnoreCase);
  4. }
  6. public static string ToTitleCase(string title)
  7. {
  8. var cultureInfo = Thread.CurrentThread.CurrentCulture;
  9. var textInfo = cultureInfo.TextInfo;
  10. return textInfo.ToTitleCase(title);
  11. }
  12. //Returns an array converted into a string
  13. public static string ArrayToString(Array input, string separator)
  14. {
  15. var ret = new StringBuilder();
  16. for (var i = 0; i < input.Length; i++)
  17. {
  18. ret.Append(input.GetValue(i));
  19. if (i != input.Length - 1)
  20. ret.Append(separator);
  21. }
  22. return ret.ToString();
  23. }
  25. //Capitalizes a word or sentence
  26. //word -> Word
  27. //OR
  28. //this is a sentence -> This is a sentence
  29. public static string Capitalize(string input)
  30. {
  31. if (input.Length == 0) return string.Empty;
  32. if (input.Length == 1) return input.ToUpper();
  34. return input.Substring(0, 1).ToUpper() + input.Substring(1);
  35. }
  37. //Checks whether a word or sentence is capitalized
  38. //Word -> True
  39. //OR
  40. //This is a sentence -> True
  41. public static bool IsCapitalized(string input)
  42. {
  43. if (input.Length == 0) return false;
  44. return string.CompareOrdinal(input.Substring(0, 1), input.Substring(0, 1).ToUpper()) == 0;
  45. }
  47. //Checks whether a string is in all lower case
  48. //word -> True
  49. //Word -> False
  50. public static bool IsLowerCase(string input)
  51. {
  52. for (var i = 0; i < input.Length; i++)
  53. {
  54. if (string.CompareOrdinal(input.Substring(i, 1), input.Substring(i, 1).ToLower()) != 0)
  55. return false;
  56. }
  57. return true;
  58. }
An exhaustive list can be found here.

1 Comment

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