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- Bool IsNumber (string str)
- {
- return str _
- .Replace ("0", "") _
- .Replace ("1", "") _
- .Replace ("2", "") _
- .Replace ("3", "") _
- .Replace ("4", "") _
- .Replace ("5", "") _
- .Replace ("6", "") _
- .Replace ("7", "") _
- .Replace ("8", "") _
- .Replace ("9", "") _
- .Length == 0;
- }
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