...create and control asp.net programs with delphi events?
Author: andy chapman
(*
****************** Below is a complete listing for an ASPX file to open and
read an ACCESS database. Obviously the source=c:\mydb.mdb declaration should
be changed to point to your own database. The sql commands will also need to
be ammended to point to the correct tables and values. This souce code is a
translation from native c#. Any problems with the code or , thanks, comments
or general abuse over codeing standrds should be sent to andychap@hotmail.com,
Please put "delphi" in the subject line so I can junk filter.
Good luck.....
As another issue I've also got some examples I've written for Delphi for Dot Net
doing similar stuff
**********************************************************************************
*)
<%@ Page Language="Delphi" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>
<script runat="server">
procedure Button1Click(Sender: System.Object; E: EventArgs);
var
MyConnection : OleDbConnection ;
dbReader : OleDbDataReader;
cmd : OleDbCommand;
abc : string;
outval : string;
intval : longint;
begin
abc := 'Provider=Microsoft.Jet.OLEDB.4.0;Password=;Data Source=c:\mydb.mdb';
MyConnection := OleDbConnection.Create(abc);
MyConnection.Open;
cmd := MyConnection.CreateCommand;
cmd.CommandText := 'Select * from Table1';
dbReader := cmd.ExecuteReader;
while (dbReader.Read) do
begin
intval := dbReader.GetInt32(0);
outval := dbReader.GetString(1);
end;
Label1.Text := inttostr(intval);
end;
procedure Button2Click(Sender: System.Object; E: EventArgs);
var
ConnStr : string;
CommTxt : string;
MyConnection : OleDbConnection ;
abc : string;
cmdText : string;
cmd : OleDbCommand;
begin
ConnStr := 'Provider=Microsoft.Jet.OLEDB.4.0;Password=;Data Source=c:\mydb.mdb';
CommTxt := 'select andy as [first name], chapman as [Last Name] from Table1';
abc := 'Provider=Microsoft.Jet.OLEDB.4.0;Password=;Data Source=c:\mydb.mdb';
MyConnection := OleDbConnection.Create(abc);
cmd := OleDbCommand.Create(CommTxt,MyConnection);
MyConnection.Open;
DataGrid1.DataSource := cmd.ExecuteReader(CommandBehavior.CloseConnection);
DataGrid1.DataBind();
end;
</script>
<html>
<head>
</head>
<body style="FONT-FAMILY: arial">
<h2>Simple Data Report
</h2>
<hr size="1" />
<form runat="server">
<asp:datagrid id="DataGrid1" runat="server" CellSpacing="1" GridLines="None" CellPadding="3" BackColor="White" ForeColor="Black" EnableViewState="False">
<HeaderStyle font-bold="True" forecolor="White" backcolor="#4A3C8C"></HeaderStyle>
<ItemStyle backcolor="#DEDFDE"></ItemStyle>
</asp:datagrid>
<asp:Button id="Button1" style="Z-INDEX: 100; LEFT: 284px; POSITION: absolute; TOP: 151px" onclick="Button1Click" runat="server" Text="Bind To Data Grid"></asp:Button>
<asp:Label id="Label1" style="Z-INDEX: 100; LEFT: 467px; POSITION: absolute; TOP: 156px" runat="server" Width="42px">Label</asp:Label>
<asp:Button id="Button2" style="Z-INDEX: 101; LEFT: 283px; POSITION: absolute; TOP: 182px" onclick="Button2Click" runat="server" Text="Button"></asp:Button>
</form>
</body>
</html>
(*
To make the code execute locally you should download webmatrix which is an
excellent free downloadable aspx development environment. All you need then
is the following code in a web.config document :
*)
<configuration>
<system.web>
<compilation debug="true">
<assemblies>
<add assembly="DelphiProvider" />
</assemblies>
<compilers>
<compiler language="Delphi" extension=".pas" type="Borland.Delphi.DelphiCodeProvider,DelphiProvider" />
</compilers>
</compilation>
</system.web>
</configuration>
(*
and inside a bin directory at the root the DelphiProvider.dll.
You may now create and run asp.net applications with delphi as you chosen
method of codeing.
*)
printed from
www.swissdelphicenter.ch
developers knowledge base