SendToF.pas
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上传用户:fh681027
上传日期:2022-07-23
资源大小:1959k
文件大小:3k
源码类别:
Delphi控件源码
开发平台:
Delphi
- unit SendToF;
- interface
- uses
- Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
- DBTables, DB, StdCtrls, Grids, DBGrids, ComCtrls;
- type
- TForm1 = class(TForm)
- Table1: TTable;
- Table1Name: TStringField;
- Table1Capital: TStringField;
- Table1Continent: TStringField;
- Table1Area: TFloatField;
- Table1Population: TFloatField;
- EditCapital: TEdit;
- EditPopulation: TEdit;
- EditArea: TEdit;
- Label1: TLabel;
- Label2: TLabel;
- Label3: TLabel;
- Label4: TLabel;
- Label5: TLabel;
- ComboContinent: TComboBox;
- Button1: TButton;
- Button2: TButton;
- ComboName: TComboBox;
- procedure Button1Click(Sender: TObject);
- procedure Button2Click(Sender: TObject);
- procedure FormCreate(Sender: TObject);
- procedure ComboNameKeyPress(Sender: TObject; var Key: Char);
- procedure ComboNameClick(Sender: TObject);
- private
- { Private declarations }
- public
- procedure GetData;
- procedure SendData;
- end;
- var
- Form1: TForm1;
- implementation
- {$R *.DFM}
- procedure TForm1.GetData;
- begin
- Table1.FindNearest ([ComboName.Text]);
- ComboName.Text := Table1Name.AsString;
- EditCapital.Text := Table1Capital.AsString;
- ComboContinent.Text := Table1Continent.AsString;
- EditArea.Text := Table1Area.AsString;
- EditPopulation.Text := Table1Population.AsString;
- end;
- procedure TForm1.SendData;
- begin
- // raise an exception if there is no name
- if ComboName.Text = '' then
- raise Exception.Create ('Insert the name');
- // check if the record is already in the table
- if Table1.FindKey ([ComboName.Text]) then
- begin
- // modify found record
- Table1.Edit;
- Table1Capital.AsString := EditCapital.Text;
- Table1Continent.AsString := ComboContinent.Text;
- Table1Area.AsString := EditArea.Text;
- Table1Population.AsString := EditPopulation.Text;
- Table1.Post;
- end
- else
- begin
- // insert new record
- Table1.InsertRecord ([ComboName.Text,
- EditCapital.Text, ComboContinent.Text,
- EditArea.Text, EditPopulation.Text]);
- // add to list
- ComboName.Items.Add (ComboName.Text)
- end;
- end;
- procedure TForm1.Button1Click(Sender: TObject);
- begin
- GetData;
- end;
- procedure TForm1.Button2Click(Sender: TObject);
- begin
- SendData;
- end;
- procedure TForm1.FormCreate(Sender: TObject);
- begin
- // fill the list of names
- Table1.Open;
- while not Table1.Eof do
- begin
- ComboName.Items.Add (Table1Name.AsString);
- Table1.Next;
- end;
- end;
- procedure TForm1.ComboNameKeyPress(Sender: TObject; var Key: Char);
- begin
- if Key = #13 then
- GetData;
- end;
- procedure TForm1.ComboNameClick(Sender: TObject);
- begin
- GetData;
- end;
- end.