I have already converted this into string using data transformation column ie DT_STR

Thanks for helping me out on this. I have set the output column width it is working absolutely fine:-)

Yes the source file is a text file and it is using Flatfile connection manager .The data type is string[DT_STR] and width input column width is 0 (read only) and...

No I was not able to do that , can you please help me in doing this