[en] We study experimentally the processes of photoionization, photodissociation and photodesorption in methyl formate ice due to interaction of soft X-rays at two energy ranges, from 284 to 298 eV and from 528 to 546 eV, around the C ls→π"* and O ls→π"* resonances. The photodesorption ion yield was obtained for some of the desorbed species of the ice surface, like CH"+, HCO"+ and H_3CO"+. The extrapolation of these results to an astrophysical environment, as the protoplanetary disc of TW Hydrae star, is presented (paper)