您所在位置：主题：那位大哥帮我看下,问题出在那,我是新学的.
zhanglin1005
[专家分：0] 发布于 2006-11-23 18:45:00
procedure TForm1.ListBox1DblClick(Sender: TObject);
var biaoming:string;
begin
biaoming:=Listbox1.Items.Strings[listbox1.Itemindex];
adoquery1.Close;
adoquery1.SQL.Clear;
adoquery1.SQL.Add('select jbxxku from produceid where gonghao=:biaoming');
adoquery1.Open ;
ADOTable1.Close;
adotable1.TableName:=adoquery1.FieldValues['jbxxku'] ;
adotable1.Open
end;
在produceid表里gonghao字段的类型为varchar.
运行时提示：con't convert variant of type.请问问题出在那啊?
var biaoming:string;
begin
biaoming:=Listbox1.Items.Strings[listbox1.Itemindex];
adoquery1.Close;
adoquery1.SQL.Clear;
adoquery1.SQL.Add('select jbxxku from produceid where gonghao=:biaoming');
adoquery1.Open ;
ADOTable1.Close;
adotable1.TableName:=adoquery1.FieldValues['jbxxku'] ;
adotable1.Open
end;
在produceid表里gonghao字段的类型为varchar.
运行时提示：con't convert variant of type.请问问题出在那啊?