//将图片存入数据库的函数
y+ c. c* V. |( U! g9 D# W- b uprocedure TDBOper.PhotoToDB(const image:TSUIImagePanel;const Source:TCustomADODataset);
5 r. A2 A/ d6 K/ P7 A//image这里输入放图片的控件,比如TImage,Source是要存入的数据库名,最后一个是窗体名& T! \: u9 ?* z9 j% j$ `0 d# L
const tempFile='temp.jpg';4 Z+ g7 g. @ c/ H% }
const photo='照片实体';
/ @, _6 D6 Z, @% Aconst photosize='照片文件长度';& W% v" X5 J: ^) @- u
var
. I2 Q1 }1 L. R! r/ R% t f:file of Byte;
8 _3 g% j' q. q9 c2 A3 Ibegin, ]6 R' l( b+ F& T& R
if Source.RecordCount<>0 then" l+ ^2 q6 [- h# L1 _* \& N
begin; V( S ?4 i3 @$ `5 T6 n6 n
Source.First;
5 p$ S+ P5 X0 m8 C; V Source.Edit;
# @$ c/ T! W) X image.Picture.SaveToFile(tempFile);
* R$ N) n: c* ]$ Y9 W+ F# A4 H try) n. l+ _. \2 e
(TBlobField(Source.FieldByName(photo))).LoadFromFile(tempFile);0 n9 V7 T( D: |3 Q# z% j
AssignFile(f,tempFile);" T5 J4 n A8 q* o# ^4 |
Reset(f);' j9 f- S, k5 o" o* B7 t
Source.FieldValues[photosize]:=FileSize(f);
1 K2 x- i: D" [ Source.Post;
5 U( q/ k5 i; _5 g! `! Y b finally
; A9 w4 a2 D: C( H CloseFile(f);
* t6 }+ \: T. M' G. P3 e5 m$ l2 x DeleteFile(tempFile);, F9 R& w4 u8 s# t- t) O8 @
end;
# c2 _, |: s4 U8 S' j) { end;
$ \- ?- y% ~' V6 c- gend;
/ y; y+ g* i8 ?3 O' W' j" y//------------------------------------------------------------------从数据库中读出图片的函数( n% D9 M) |# k- F; m) l
function TDBOper.DBToPhoto(const Source:TCustomADODataset;const image:TSUIImagePanel):Integer;
2 M: ~/ `# g# z3 e4 Z5 F' k7 W//image这里输入放图片的控件,比如TImage,Source是要存入的数据库名: ~( }7 R4 R L
const tempFile='temp.jpg';+ f8 p1 w# a: `4 I5 d* U
const photo='照片实体';4 [0 h! X A0 j" m: E, `/ t/ Q
const photosize='照片文件长度';
- O% S; W, V! l0 p8 Ybegin: e* _6 o0 t* P& `# {
result:=0;
% e# K( v: K) ~! n0 S4 X) p% } if Source.RecordCount<>0 then) i0 e+ ]" L& d; A( C6 \3 C
begin
0 H, E M1 m' D* C //Source.First;
1 n; d1 l+ ^' E8 P (TBlobField(Source.FieldByName(photo))).SaveToFile(tempFile);$ h0 K2 d/ e# R6 e L A
try$ @+ ]- o7 F( v/ Y
image.Picture.LoadFromFile(tempFile);
3 Y% \' I! B; d J! i$ r+ M result:=Source.FieldByName(photosize).AsInteger;
" |, b, }7 d% f$ ^7 |0 h: {. P0 o finally
+ n0 O/ n/ c5 M$ @7 N2 b3 ? DeleteFile(tempFile);
1 \# a- M1 f, i8 n+ A. w5 a end;/ r7 E: W3 Q; F% `& r$ o
end
2 i9 ^+ L: j2 w* C7 { else" k4 I( X- ?) m. j% n) E
result:=0;8 i/ i! Y# J$ X" e
end; |