诸位牛人帮帮忙.(文件读取)

各位牛人帮帮忙...(文件读取)
代码的主要功能应该是从文件里读内容，下面的代码具体什么意思？如果转换为C++或C#，应该怎么读取文件？
aDataEpcdata_da db '\Data\Data.dat',0 ; DATA XREF: sub_52845C+4Eo
                align 4
                dd 0FFFFFFFFh, 12h]

mov     edx, [ebp+var_8]
mov     eax, offset unk_619FB4
mov     ecx, offset aDataEpcdata_da ; "\\Data\\Data.dat"
call    sub_4051BC

sub_4051BC      proc near               ; CODE XREF: sub_40A658+5Cp
CODE:004051BC                                         ; sub_418554+E2p ...
CODE:004051BC                 test    edx, edx
CODE:004051BE                 jz      short loc_405221
CODE:004051C0                 test    ecx, ecx
CODE:004051C2                 jz      sub_404F04
CODE:004051C8                 cmp     edx, [eax]
CODE:004051CA                 jz      short loc_405228
CODE:004051CC                 cmp     ecx, [eax]
CODE:004051CE                 jz      short loc_4051DE
CODE:004051D0                 push    eax
CODE:004051D1                 push    ecx
CODE:004051D2                 call    sub_404F04