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Jan 19th, 2018
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  1. Bool IsNumber (string str)
  2. {
  3. return str _
  4. .Replace ("0", "") _
  5. .Replace ("1", "") _
  6. .Replace ("2", "") _
  7. .Replace ("3", "") _
  8. .Replace ("4", "") _
  9. .Replace ("5", "") _
  10. .Replace ("6", "") _
  11. .Replace ("7", "") _
  12. .Replace ("8", "") _
  13. .Replace ("9", "") _
  14. .Length == 0;
  15. }
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