Hi,
I want to display the string field as multi-line like text field.

Eg. I have one Field which have 500 char. length, so i want to display multi line in detail session instead of single line.

Note : Field is not Text Field

any solution ?

So the field is just a string of 500 characters? Just break it a part into multiple pieces and display each of the lines. So you could display line1,line2...,line5 and each of these would be a subset of the original string field.