I want to chek duplicate line in text file
Example:
If in "1.txt" has this data inside
50B82D3F9D3
2C051C76C7D
5804EBB2BB8
559AAC90CEE
DA64B9F10CC
B9A6A9866A9
AFF45E93F23
.
.
.
.
45788887454
B9A6A9866A9
This above text file has duplicate line
"B9A6A9866A9"
I want to write proram to check duplicate line.
Do you know how to do that? (Now I can use CStdioFile (ReadString, WriteString) and show Messagebox but not have idea to do that.)
Thank you for your answer.