Regular Expression for a string

Question

Hello All I have two strings one is valid and another is not valid i need read only valid xml files for loadingso kindly help me with a regular expression which validates the string and tells as valid /Invalid. string faString1 = FA557_740Lxe.xml; [Valid] string faString2 = FAlist_G31.xml; [InValid] Thank you

Vulpes · Answer

More generally you can use: string regExp = @^[a-zA-Z]{2}\d+_[a-zA-Z0-9]+\.xml$;

Munesh Sharma · Answer

Use this regular expression. the regular expression is regex rx = new regex(^[a-zA-Z]{22}[0-9]{33}_[0-9]{33}[a-zA-Z{33}.xml); if(rx.ISmatch(textbox1.text)) { } else { }

sampath meka · Answer

Actually A valid string contains first 2 characters followed by numbers again followed by _ and contains alphanumberic and ends with .xml kindly help me to write a regex for this Thank you

sampath meka · Answer

Actually A valid string contains first 2 characters followed by numbers again followed by _ and contains alphanumberic and ends with .xml kindly help me to write a regex for this Thank you

Abhay Shanker · Answer

What is the valid string pattern

Munesh Sharma · Answer

you tell me which of validation you want. just write that format. then i will tell regular expression for that.