Many times we need a drop down button to choose the file that we need for reports or BDC. This tip gives the users
a Windows style Browse option to select the file from local PC or the network.
parameters: in_file like rlgrap-filename. at selection-screen on value-request for in_file. clear g_tmp_file_path. perform select_input_file_name. move g_tmp_file_path to in_file. form select_input_file_name. call function 'F4_FILENAME' exporting program_name = sy-repid dynpro_number = sy-dynnr field_name = 'PATH' importing file_name = g_tmp_file_path. endform.