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Article View: borland.public.interbase.thirdparty
Article #178

Re: Using TIBQuery for Update

#178
From: Jeff Overcash (TeamB)
Date: Sun, 28 Jan 2007 06:33
53 lines
2682 bytes
Jack Mason wrote:
> We have the following code:
> 
> ...
> 
> var Stock_Location: string;
> ...
> 
> procedure TMainForm.TestQueryBeforePost(DataSet: TDataSet);
> begin
>   DataSet.FieldByName('LOCATION').AsString := Stock_Location;
> end;
> 
> procedure TMainForm.SetLocation;
> begin
> ...
> 
> Stock_Location := '33';
> TestQuery.Close;
> TestQuery.SQL.Text := 'SELECT * FROM STOCK WHERE STOCKNO=''' + 
>                                    StockNo_Str + '''';
> TestQuery.Open;
> if not TestQuery.IsEmpty then
>        begin
>          TestQuery.Edit;
>          TestQuery.Post;
>        end
>       else
>        begin
>          TestQuery.Append;
>          TestQuery.Post;
>        end;
> ..
> end;
> 
> TestQuery.ReadOnly is set to False, TestQuery.Unidirectional is set to 
> False, yet when the TestQuery.Edit or TestQuery.Append executes, there 
> is an error message saying "Cannot modify a read-only dataset".
> 
> What are we doing wrong?

You have to add an IBUpdateSQL component, link the two and set the update SQL to 
make IBQuery read/write.

-- 
Jeff Overcash (TeamB)
       (Please do not email me directly unless  asked. Thank You)
A human being should be able to change a diaper, plan an invasion, butcher
a hog, conn a ship, design a building, write a sonnet, balance accounts, build
a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act
alone, solve equations, analyze a new problem, pitch manure, program a computer,
cook a tasty meal, fight efficiently, die gallantly.  Specialization is for 
insects.   (RAH)
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Date: Sun, 28 Jan 2007 01:33:10 -0500
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