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//将图片存入数据库的函数 ) F) p9 m- S2 x4 Y# g+ m$ r9 o
procedure TDBOper.PhotoToDB(const image:TSUIImagePanel;const Source:TCustomADODataset);
! {8 j, T: B5 `" ?! x8 n# 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
! q2 T/ {: R8 r! A. }const tempFile='temp.jpg';
) ?# h) l" D: b+ a' g, B3 sconst photo='照片实体';: r8 v8 F. @% I1 ~/ b" U
const photosize='照片文件长度';4 H; V* f0 k. C( h! `
var
' L& z+ H0 M4 K! V1 f f:file of Byte;+ [2 a5 e; t" x' ]
begin/ y3 |1 V D2 O9 T* y
if Source.RecordCount<>0 then
/ X3 }/ D/ ~2 C) z begin
: G6 M: O" i- z0 T Source.First;
6 Z+ X4 n1 U1 P2 @5 W Source.Edit;
8 z( s6 z% N7 Y+ @) y; U; f image.Picture.SaveToFile(tempFile);7 \! d2 j" o% E P+ {. U1 I# F
try
/ V! N, e* d2 U9 g5 k( G8 V/ T (TBlobField(Source.FieldByName(photo))).LoadFromFile(tempFile);4 D0 Z2 _" e5 C, P+ Y: r6 g+ ]
AssignFile(f,tempFile);
) @; f5 A5 X! Y! f2 Q4 N Reset(f);
0 @( h) ~" b# W. l) L, ~# l Source.FieldValues[photosize]:=FileSize(f);
! J( E+ v& ~4 o8 B3 h3 t( P* l8 f Source.Post;
; Q5 z: o! Y8 x6 R& f7 I& G+ X2 T finally
; Z2 r- u8 ^) K$ ~6 B: J, }+ Z CloseFile(f);# x# i* `: @8 x3 U
DeleteFile(tempFile);
5 [% h% _2 V i. n end; U+ A' |& ~2 ^( d& Y' [1 Y
end;& p3 c! ?" ?: i! X# _; y1 f
end;
( e' i# s( l$ H! y//------------------------------------------------------------------从数据库中读出图片的函数
" j! C+ Z# [! @% [5 @: Ffunction TDBOper.DBToPhoto(const Source:TCustomADODataset;const image:TSUIImagePanel):Integer; 8 h( u! F. G$ g3 i4 M$ @3 L
//image这里输入放图片的控件,比如TImage,Source是要存入的数据库名: {8 u. X, P! s" z
const tempFile='temp.jpg';* H9 q. S, d- O& n1 A
const photo='照片实体';# a* x S% H9 i; F& H2 B. M |: f
const photosize='照片文件长度';
g6 v& a* i" _/ _' L5 y; s+ F0 ?: Hbegin
+ m) f: Z6 H! |: H result:=0;) d: v4 s# [) G5 Y1 e6 L
if Source.RecordCount<>0 then
8 f; a# y9 p8 r begin- t4 R1 E# y0 [
//Source.First;
+ Z5 H9 L4 J3 r* n* w (TBlobField(Source.FieldByName(photo))).SaveToFile(tempFile);
+ P+ F# h- c+ B1 { try# l2 [2 G( X$ q8 H8 B9 S
image.Picture.LoadFromFile(tempFile);+ b) l9 j: A8 y7 ^
result:=Source.FieldByName(photosize).AsInteger;
: u3 m9 @% F5 I finally+ a, S0 m6 v7 y3 h
DeleteFile(tempFile);
2 L% b/ v7 ^4 ^8 y+ m! V3 N- w, Z end;
5 k( ]: N& G3 e6 K' {8 _ end* w$ Z# w% X/ {0 j2 S! H8 q8 K
else; D: n9 ~$ s9 k) B+ t
result:=0;
8 N; t" o' ^+ o, u- I1 I3 Send; |