c# - Reg Expression Error after combining -

format:

tb-string1-string2-year-numericdata1-numericdata1digitalways

examples per above format.

tb-testdata1-testdata2-2015-65789-3

this have tried for

    var result = regex.match(testdata, @"\t\b-\s{2,5}\-\s{2,5}\-[\d{4}]\-\^[0-9]+$\-[\d]");          if (result.success)         {               return match;          else          {             return nomatch;          } 

it throwing invalid argument exception.

here requirement.

first 2 letters “tb”. not case sensitive.

each items above separated “-”.

string1 --> characters z. not case sensitive. should between 2 5 characters.

string2 --> characters z. not case sensitive. should between 2 5 characters

year --> should 4 characters numeric data. year data. should +ve numbers only.

numericdata1 --> positive numeric data only. should between 2 10 characters.

numericdata1digitalways --> 1 digit numeric data between 0 8 only.

i have tried each parts individually. breaks when concatenate expression together.

thank help.

according conditions, regex not perfect. can use

var result = regex.match(testdata, @"[tt][bb]-([a-za-z]{2,5}-){2}\d{4}-\d{2,10}-[0-8]"); 

explanation:

• \s (all characters except space) should changed [a-za-z] character between a-z , not case sensitive
• ending \d should changed [0-8]
• also, have remove ^ , $ ^[0-9]+$ since check beginning , ending of string