为什么小弟我写这句代码的时候提示diaoduquery6 不在edit和insert的状态下

为什么我写这句代码的时候提示diaoduquery6 不在edit和insert的状态下
diaoduquery4.Close;
  diaoduquery4.DatabaseName:='dddb';
  diaoduquery4.SQL.Clear;
  diaoduquery4.SQL.Add('select * from '+jbzname+'对应表');
  diaoduquery4.Open;
  while diaoduquery4.Eof=false do
  begin
  if(diaoduquery4.FieldByName('材料名称').AsString=diaoduquery5.FieldByName(t).AsString) and (length(diaoduquery5.FieldByName(t).AsString)>0) then
  begin

  diaoduquery6.Close;
  diaoduquery6.DatabaseName:='jbzdb';
  diaoduquery6.SQL.Clear;
  diaoduquery6.SQL.Add('select * from 配比 where 任务编号='''+edit25.Text+'''');
  diaoduquery6.Open;
  diaoduquery6.FieldByName(diaoduquery4.fieldbyname('对应字段').AsString).AsString:= diaoduquery4.FieldByName('材料名称').AsString;

[解决办法]
因为你写的是赋值语句,所以datase必须处于编辑或者插入状态,
diaoduquery6.edit
[解决办法]
diaoduquery6.Open;
后面加
diaoduquery6.Edit;
[解决办法]
diaoduquery6设置只读属性了。