ASP.NET Tutorial/Response/ContentType — различия между версиями

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Версия 15:30, 26 мая 2010

Extracting XML from a SQL Server with System.Data.DataSet (C#)

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string connStr = "database=Northwind;Data Source=.\\SQLEXPRESS;User id=Joe;pwd=password";
        using (SqlConnection conn = new SqlConnection(connStr))
        {
            SqlCommand command = new SqlCommand("select * from customers", conn);
            conn.Open();
            DataSet ds = new DataSet();
            ds.DataSetName = "Customers";
            ds.Load(command.ExecuteReader(), LoadOption.OverwriteChanges, "Customer");
            Response.ContentType = "text/xml";
            ds.WriteXml(Response.OutputStream);
        }
    }
}


Extracting XML from a SQL Server with System.Data.DataSet (VB)

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
File: Default.aspx.vb
Imports System.Data
Imports System.Data.SqlClient
Partial Class _Default
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
           Handles Me.Load
        Dim connStr As String = "database=Northwind;Data Source=.\SQLEXPRESS; " _
               & "User id=Tom;pwd=password"
        Using conn As New SqlConnection(connStr)
            Dim command As New SqlCommand("select * from customers", conn)
            conn.Open()
            Dim ds As New DataSet()
            ds.DataSetName = "Customers"
            ds.Load(command.ExecuteReader(), LoadOption.OverwriteChanges, "Customer")
            Response.ContentType = "text/xml"
            ds.WriteXml(Response.OutputStream)
        End Using
    End Sub
End Class


Response.ContentType = "image/jpeg"

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Image" Debug="true" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Web;
using System.Web.UI;
using System.IO;
public partial class Image : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string fileName = Server.MapPath(@"/1.jpg");
        Response.ContentType = "image/jpeg";
        Response.WriteFile(fileName);
    }
}
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Response/ContentType&oldid=3448»