Count specific character in textbox

[therealbishwash (Bishwash Neupane)]

I want to count the total numbers of comma (,) in a textbox. I don’t have any idea regarding it. If anyone has done something like this, then please help me. My text box will contain something like this: 9876543210,123456789,5851268525. A comma in every text.

[dora_paz (Dora)]

Using regex extension by @Kevinkun

[iamwsumit (Sumit Kumar)]

Almost same blocks with easy logic

[therealbishwash (Bishwash Neupane)]

Thank you everyone and specially @dora_paz . , . Now, its working fine

[dora_paz (Dora)]

I thought the same thing but if there is a comma after last word this doesn’t work

Instead

[bodymindpower (Anke)]

@dora_paz

if there is a comma after last

Maybe like this: