128 lines
3.8 KiB
ObjectPascal
128 lines
3.8 KiB
ObjectPascal
{******************************************************************
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JEDI-VCL Demo
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Copyright (C) 2002 Project JEDI
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Original author:
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Contributor(s):
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You may retrieve the latest version of this file at the JEDI-JVCL
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home page, located at http://jvcl.sourceforge.net
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The contents of this file are used with permission, subject to
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the Mozilla Public License Version 1.1 (the "License"); you may
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not use this file except in compliance with the License. You may
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obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1_1Final.html
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Software distributed under the License is distributed on an
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"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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******************************************************************}
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unit CsvDataSourceDemoFm;
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{ Demo by Warren Postma, warrenpstma@hotmail.com }
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interface
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uses
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Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
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Dialogs, DB, Grids, DBGrids, ExtCtrls, DBCtrls, StdCtrls,
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ComCtrls, JvCSVParse, JvCsvData;
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type
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TCsvDataSourceForm = class(TForm)
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DataSource1: TDataSource;
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DBNavigator1: TDBNavigator;
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DBGrid1: TDBGrid;
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Button1: TButton;
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Button2: TButton;
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Memo1: TMemo;
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Button3: TButton;
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JvCsvDataSet1: TJvCsvDataSet;
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JvCsvDataSet1NAME: TStringField;
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JvCsvDataSet1ADDRESS: TStringField;
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JvCsvDataSet1ADDRESS2: TStringField;
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JvCsvDataSet1TELEPHONE: TStringField;
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JvCsvDataSet1AGE: TIntegerField;
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JvCsvDataSet1LASTPHONECALL: TDateTimeField;
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JvCsvDataSet1PRIVATENUMBER: TBooleanField;
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Label2: TLabel;
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ComboBox1: TComboBox;
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RichEdit1: TRichEdit;
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Button4: TButton;
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OpenDialog1: TOpenDialog;
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procedure Button2Click(Sender: TObject);
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procedure Button1Click(Sender: TObject);
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procedure Button3Click(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure FormClose(Sender: TObject; var Action: TCloseAction);
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procedure ComboBox1Change(Sender: TObject);
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procedure Button4Click(Sender: TObject);
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public
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end;
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var
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CsvDataSourceForm: TCsvDataSourceForm;
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implementation
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{$R *.dfm}
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procedure TCsvDataSourceForm.Button2Click(Sender: TObject);
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begin
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// OutputDebugString(PChar(JvCsvDataSet1.GetCsvHeader)); // neat trick. reads first line of file only.
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JvCsvDataSet1.Flush; // flush current contents to disk. okay, maybe it should be called save,
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// then you wouldn't see jokes in the code about how this component has
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// been tested, and shown to last for over two thousand flushes. <grin>
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end;
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procedure TCsvDataSourceForm.Button1Click(Sender: TObject);
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begin
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Memo1.Clear;
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JvCsvDataSet1.AssignToStrings(Memo1.Lines);
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end;
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procedure TCsvDataSourceForm.Button3Click(Sender: TObject);
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begin
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JvCsvDataSet1.Active := False;
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JvCsvDataSet1.AssignFromStrings(Memo1.Lines);
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JvCsvDataSet1.Active := True;
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end;
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procedure TCsvDataSourceForm.FormCreate(Sender: TObject);
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begin
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JvCsvDataSet1.Active := True; // ensure it's opened when the app is started.
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// second component tests what happens if you don't set up the CsvDef field
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// JvCsvDataSet2.Active := True; // ensure it's opened when the app is started.
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end;
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procedure TCsvDataSourceForm.FormClose(Sender: TObject;
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var Action: TCloseAction);
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begin
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if DataSource1.State = dsEdit then
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JvCsvDataSet1.Post;
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end;
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procedure TCsvDataSourceForm.ComboBox1Change(Sender: TObject);
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begin
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JvCsvDataSet1LASTPHONECALL.DisplayFormat := StrStrip(ComboBox1.Text);
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end;
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procedure TCsvDataSourceForm.Button4Click(Sender: TObject);
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begin
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if OpenDialog1.Execute then
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Memo1.Lines.LoadFromFile(OpenDialog1.FileName);
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end;
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end.
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