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fibdev

asked on

What's wrong with this?

I have two issues, and I'm not sure if they are related, but here is the code...

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DB, ADODB, Menus, StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    ADOConnection1: TADOConnection;
    ADOTable1: TADOTable;
    RadioGroup1: TRadioGroup;
    ListBox1: TListBox;
    Memo1: TMemo;
    procedure FormCreate(Sender: TObject);
    procedure RadioGroup1Click(Sender: TObject);
    procedure ListBox1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
 Data : String;
 i: Integer;
 AccessTableNames: TStringList;
begin

 AccessTableNames   := TStringList.Create;
 Data := ExtractFilePath(Application.ExeName) + '\snippits.mdb';
 try
  ADOConnection1.ConnectionString :=
            'Provider=Microsoft.Jet.OLEDB.4.0;' +
            'Data Source=' + Data +';'+
            'Persist Security Info=False';
  ADOConnection1.Open;
  ADOConnection1.GetTableNames(AccessTableNames);
  ADOConnection1.Close;
 finally
  for i := 0 to AccessTableNames.Count -1 do
   RadioGroup1.Items.Add(AccessTableNames[i]);
  AccessTableNames.Free;
 end;
end;

procedure TForm1.RadioGroup1Click(Sender: TObject);
var
  Tbl:TADOTable;
begin
  Tbl:=TADOTable.Create(Self);
    try
      Tbl.Connection:=ADOConnection1;
      Tbl.TableName:=RadioGroup1.Items[RadioGroup1.ItemIndex];
      Tbl.Open;

        with Tbl do
        begin
          First;
          ListBox1.Items.Clear;
            while not eof do
            begin
              ListBox1.Items.Add(FieldByName('Title').text);
              Next;
            end;
        end;
    finally
      Tbl.Active:=False;
      Tbl.Free;
end;
end;

procedure TForm1.ListBox1Click(Sender: TObject);
var
  Tbl:TADOTable;
begin
   Memo1.Clear;
   Tbl:=TADOTable.Create(Self);
   try
    Tbl.Connection:=ADOConnection1;
    Tbl.TableName:=RadioGroup1.Items[RadioGroup1.ItemIndex];
    Tbl.Open;
  tbl.Active := false;
     tbl.Filter := 'Title = ' + QuotedStr(ListBox1.Items.ValueFromIndex[radiogroup1.itemindex]);
     tbl.Filtered := True;
  tbl.Active := True;
    with tbl do
    begin
   {------------------------------------------------------
    This isn't working because the first char of my 'Title' string is being trimmed off
   --------------------------------------------------------}
      Memo1.Text := Fieldbyname('Code').asstring;
    end;
       finally
  {------------------------------------------------------
     One of my table names is 'c++' and so I'm getting an error when I select it in my RadioGroup
  -------------------------------------------------------}
      Tbl.Active:=False;
      Tbl.Free;
  end;
end;


end.


// Thanks in advance!
// Gabe
Avatar of fibdev
fibdev

ASKER

So, to sum it up

My filter is returning undesirable results...

'Hello World' is showing up as 'ello World'.

This is causing my Memo1 to not be populated.  :(
ASKER CERTIFIED SOLUTION
Avatar of kretzschmar
kretzschmar
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Avatar of fibdev

ASKER

Well,

I have it working, but I'm sure there's a better way...

procedure TForm1.ListBox1Click(Sender: TObject);
var
  Tbl:TADOTable;
  CodeText : String;
begin
   Memo1.Clear;
   Tbl:=TADOTable.Create(Self);
   try
    Tbl.Connection:=ADOConnection1;
    Tbl.TableName:=RadioGroup1.Items[RadioGroup1.ItemIndex];
    Tbl.Open;
  tbl.Active := false;
     tbl.Filter := 'Title = ' + QuotedStr(ListBox1.Items[ListBox1.ItemIndex]);
     tbl.Filtered := True;
 form1.Caption := 'Fibdev SnipSnap 1.0 - Code Library' + ' (' + tbl.tablename + ')';
  tbl.Active := True;
    with tbl do
    begin
      CodeText := FieldbyName('Code').AsString;
    end;
      Memo1.lines.Add(CodeText);
       finally
      Tbl.Active:=False;
      Tbl.Free;
  end;
end;