в 15:30, 26 мая 2010

2010-05-26T15:30:57Z

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2010-05-26T11:57:34Z

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== Changing DataSets using the DOM APIs from XmlDataDocument (C#)==



<source lang="csharp">
<%@ 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;
using System.Xml;
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=Tom;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");
XmlDataDocument doc = new XmlDataDocument(ds);
doc.DataSet.EnforceConstraints = false;
XmlNode node = doc.SelectSingleNode(@"//Customer[CustomerID = "ANATR"]/ContactTitle");
node.InnerText = "Boss";
doc.DataSet.EnforceConstraints = true;
DataRow dr = doc.GetRowFromElement((XmlElement)node.ParentNode);
Response.Write(dr["ContactName"].ToString() + " is the ");
Response.Write(dr["ContactTitle"].ToString());
}
}
}</source>

== Changing DataSets using the DOM APIs from XmlDataDocument (VB)==



<source lang="csharp">
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
File: Default.aspx.vb
Imports System.Data
Imports System.Data.SqlClient
Imports System.Xml
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")
Dim doc As New XmlDataDocument(ds)
doc.DataSet.EnforceConstraints = False
Dim node As XmlNode = _
doc.SelectSingleNode("//Customer[CustomerID = "ANATR"]/ContactTitle")
node.InnerText = "Boss"
doc.DataSet.EnforceConstraints = True
Dim dr As DataRow = doc.GetRowFromElement(CType(node.ParentNode, XmlElement))
Response.Write(dr("ContactName").ToString() & " is the ")
Response.Write(dr("ContactTitle").ToString())
End Using
End Sub
End Class</source>

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ASP.NET Tutorial/XML/XmlDataDocument - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия