各位前辈:
我在开发中,发现在Access数据库与Paradox数据表存入图片时,只能存入BMP格式的图片,但存入JPG格式、GIF格式的图片,就会报告"Bitmap image is not valid"的错误消息,无论我用Access的字段类型为OLE对象还是Paradox的Graphic、OLE、Binary类型,都会一样报错,请各位帮忙,万分感激!! jackyrong
我在开发中,发现在Access数据库与Paradox数据表存入图片时,只能存入BMP格式的图片,但存入JPG格式、GIF格式的图片,就会报告"Bitmap image is not valid"的错误消息,无论我用Access的字段类型为OLE对象还是Paradox的Graphic、OLE、Binary类型,都会一样报错,请各位帮忙,万分感激!! jackyrong
with adotable1 do begin
open;
insert;
(FieldByName('picture') as TBlobField).LoadFromFile(FileName);
post;
end;
filename为jpg图片所在的地址
var
pjpg:tjpegimage;
pic:TMemoryStream;
begin
pjpg:=tjpegimage.Create;
pjpg.LoadFromFile(F:\JPG.jpg);
pic:=TMemoryStream.Create;
pjpg.SaveToStream(pic);
pic.Position:=0;
TBlobField(dataset.FieldByName('Img')).LoadFromStream(pic);
dataset.post;
pic.Free;
pjpg.free;
end;
从数据库取出
var
pjpg:tjpegimage;
pic:TMemoryStream;
begin
pjpg:=tjpegimage.Create;
pic:=TMemoryStream.Create;
TBlobField(dataset.FieldByName('Img')).savetoStream(pic);
pic.positon:=0;
pjpeg.LoadFromStream(pic);
image.graphi.bmp.assign(pjpeg);
end;end;