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//将图片存入数据库的函数 ) j/ U s5 q. u
procedure TDBOper.PhotoToDB(const image:TSUIImagePanel;const Source:TCustomADODataset);
1 `+ o$ `& N+ y6 z//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% M; g" R% l" G0 l4 k2 }( s6 ^
const tempFile='temp.jpg';0 V, C3 |, n6 q' P# K7 G
const photo='照片实体';
# P- _* ] ]8 zconst photosize='照片文件长度';! M% q8 g1 Z3 L, U- s
var
4 ^" @1 [/ N* S! O( y; T f:file of Byte;
# m1 o# S! u" y1 s' L5 I8 [$ q" nbegin
/ @' @$ n: d* f' W X if Source.RecordCount<>0 then
+ S) E& w* v# G h& h begin
5 ^" c& I& m% U" N4 O Source.First;) @" W/ S8 b+ [ _) _9 `
Source.Edit;$ j. \1 r0 O% ^
image.Picture.SaveToFile(tempFile);
2 i* c4 g9 l; E( D0 i4 h try6 f% E; R% s, |' @
(TBlobField(Source.FieldByName(photo))).LoadFromFile(tempFile);
3 t; `1 z1 K& i6 b AssignFile(f,tempFile);6 B* W7 Q) l3 Z, G. q
Reset(f);: Y& i' d3 u; j* [( o4 \) Q
Source.FieldValues[photosize]:=FileSize(f);
7 U) y: h$ |1 ^/ F8 F; q' E! d Source.Post;
# F: x8 A0 p& X5 h- e2 r5 o; w finally- A# |8 k2 @$ R" i/ a3 ~# d7 t
CloseFile(f);9 u7 m6 r! C5 l( Z( T6 \
DeleteFile(tempFile);. h8 ?/ R% C$ `' d! l
end;
9 V$ Z2 u% `6 `* x, d end;1 V7 q- V1 C+ ]( X2 e" v
end;
2 m! H; A3 \7 Z" J3 F) G//------------------------------------------------------------------从数据库中读出图片的函数
' U o C' \& S1 ]function TDBOper.DBToPhoto(const Source:TCustomADODataset;const image:TSUIImagePanel):Integer;
* e1 I5 c' v/ }3 d* B//image这里输入放图片的控件,比如TImage,Source是要存入的数据库名$ x! B+ V" d! b
const tempFile='temp.jpg';
6 O8 B3 r6 {' t; [7 Lconst photo='照片实体';
' _0 Y C/ C4 O* A' Wconst photosize='照片文件长度';
+ N) o7 G* ~- g0 K* u5 ]4 wbegin
2 j) `4 R* u% H, S result:=0;
( p. S3 {8 Q6 o4 J9 V if Source.RecordCount<>0 then5 O7 B% m w* [' A
begin
* \1 ]+ P% _5 ^: a. U6 M //Source.First;
6 _7 c C' q. F8 O (TBlobField(Source.FieldByName(photo))).SaveToFile(tempFile);& r8 q" O) _% s' F, z
try9 d/ v# o" s8 ?& P7 H+ I& Y
image.Picture.LoadFromFile(tempFile);+ _! ?$ d7 A9 ~# {% L' R) o! f
result:=Source.FieldByName(photosize).AsInteger;6 R9 g, \+ m. S5 E/ o, u
finally
0 T* r# r9 n# p DeleteFile(tempFile);
2 I1 N" X& z% D5 C. ` end;$ C6 ?8 Z1 g5 [" i; \6 r
end
& ~: u2 C8 \4 M" ^4 W2 b0 z6 ^ else9 v% u- v9 J4 q: l6 d% K! q0 w
result:=0;% f0 E! U6 u6 k& l
end; |