插入图片 问题 大哥帮忙

jsp1988

<>这是我的代码</P>
<> if(OpenPictureDialog1-&gt;Execute())</P>
7 P/ e: [& |, V/ A' B9 J& B$ _2 X<>   {
" J  N" H& t1 U6 z# y   TMemoryStream *pm=new TMemoryStream();
# F6 h& w# f$ V4 c2 q4 b( O   Image1-&gticture-&gt;LoadFromFile(OpenPictureDialog1-&gt;FileName);
& a% F* @7 S. _+ a" _* S   TJPEGImage *jpg=dynamic_cast&lt;TJPEGImage*&gt;(Image1-&gticture-&gt;Graphic);
) m2 e) G/ w5 Q5 {* [) G   if(jpg!=NULL)
    jpg-&gt;SaveToStream(pm);
0 n( H0 K7 p5 c8 D( Z9 s    else
    Image1-&gticture-&gt;Bitmap-&gt;SaveToStream(pm);
      ClientDataSet1-&gt;CommandText="insert into student1 (name1,name2,pic) values ('1','1',:picture)";</P>
<>      ((TBlobField*)(ClientDataSet1-&gtarams-&gtaramByName("picture")))-&gt;LoadFromStream(pm);
        delete pm;
        ClientDataSet1-&gt;Execute();
2 \8 Y+ O. h0 _! V' x  R( B     }</P>
<>在运行期间出错误 </P>
<>rject project1.exe raised exception class
' J, @& V8 s$ |  UEAcessViolation with message ' Acess violation at address 40325fa4 in model
' dbrtl60.bpl '  read of address 94636b84</P>
  K8 ~8 g5 ~" x; W<>请问大哥们改如何的改正</P>
<>谢谢！！</P>

ilikenba

<>((TBlobField*)(ClientDataSet1-&gtarams-&gtaramByName("picture")))-&gt;LoadFromStream(pm);这句的问题！</P><>TBlobField类是一个字段类！不能将参数转成字段！关于类的说明参见本版的帖子！</P>