regex - How to check if a string contains only comma, in VB.NET -


i have string in vb.net can contain commas, or combination of letters, numbers , special characters.

for example, string can a,-,$,2 or ,,,

how can determine using regex if string has commas?

you want match string of commas?

i suggest check out regex class , @ using system.text.regularexpressions along regex.match method , regex.matches method

dim input string = ",,,,," dim m match = regex.match(input, "^,*$") if (m.success)     console.writeline("string has comma's") end if

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