Delphi Personal で ADO

更新する

procedure TForm1.Button12Click(Sender: TObject);

var

    cn :Variant;//Connection

    rs :Variant;//Recordset

    sql:string;

const

    adOpenDynamic:         Integer =  2;

    adOpenForwardOnly:     Integer =  0;

    adOpenKeyset:          Integer =  1;

    adOpenStatic:          Integer =  3;

    adOpenUnspecified:     Integer = -1;
    adLockBatchOptimistic: Integer =  4;

    adLockOptimistic:      Integer =  3;

    adLockPessimistic:     Integer =  2;

    adLockReadOnly:        Integer =  1;

    adLockUnspecified:     Integer = -1;

begin

    cn := CreateOleObject('ADODB.Connection');
    //Edit3 に mdbファイル名を入力

    cn.ConnectionString := 'Provider=Microsoft.Jet.OLEDB.4.0;Data Source=' + Edit3.Text + ';';

    cn.Open;
    //Edit4 に テーブル名を入力

    //Edit5, Edit6 に フィールド名を入力

    //Edit1 に 値を入力

    sql := 'SELECT ' + Edit6.Text

         + ' FROM '  + Edit4.Text

         + ' WHERE ' + Edit5.Text + ' = ' + Edit1.Text;
    rs := CreateOleObject('ADODB.Recordset');

    rs.Source           := sql;

    rs.Activeconnection := cn;

    rs.CursorType       := adOpenDynamic;

    rs.LockType         := adLockOptimistic;

    rs.Open;
    //Edit2 に 値を入力

    rs.Fields[0] := Edit2.Text;

    rs.Update;
    rs.Close;

    cn.Close;

end;