c# - how do you get a substring inside another text? -

i have text format:

name: last name: birthday: years old: parent: school: 

and have next information..

name:name1 last name:lastname1 birthday:13/03/1991 years old:20 parent:fatherx school:university x 

how get:

name1 lastname1 13/03/1991 20 fatherx university x 

...for different variables? dont forget user sometime dont have information example have empty

parent: 

split on colon. example, if had each 1 of lines stored in seperate string, following e.g.

string s = "name:angel rodrigo"; string name= s.split(':')[1];  // after colon