в 15:30, 26 мая 2010

2010-05-26T15:30:57Z

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2010-05-26T11:56:55Z

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== Retrieving XML from SQL Server sing FOR XML AUTO (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.Data.SqlClient;
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.IO;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
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";
XmlDocument x = new XmlDocument();
XPathNavigator xpathnav = x.CreateNavigator();
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
SqlCommand command = new SqlCommand("select * from Customers as Customer for XML AUTO, ELEMENTS", conn);
using (XmlWriter xw = xpathnav.PrependChild())
{
xw.WriteStartElement("Customers");
using (XmlReader xr = command.ExecuteXmlReader())
{
xw.WriteNode(xr, true);
}
xw.WriteEndElement();
}
}
Response.ContentType = "text/xml";
x.Save(Response.Output);
}
}</source>

== Retrieving XML from SQL Server sing FOR XML AUTO (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.IO
Imports System.Xml
Imports System.Xml.XPath
Imports System.Xml.Xsl
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"
Dim x As New XmlDocument()
Dim xpathnav As XPathNavigator = x.CreateNavigator()
Using conn As New SqlConnection(connStr)
conn.Open()
Dim command As New SqlCommand("select * from Customers as Customer " & _
"for XML AUTO, ELEMENTS", conn)
Using xw As XmlWriter = xpathnav.PrependChild()
xw.WriteStartElement("Customers")
Using xr As XmlReader = command.ExecuteXmlReader()
xw.WriteNode(xr, True)
End Using
xw.WriteEndElement()
End Using
End Using
Response.ContentType = "text/xml"
x.Save(Response.Output)
End Sub
End Class</source>

== Run a query against a SQL Server database with an XML typed column. It then displays results in a tree-view.==



<source lang="csharp">
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default"%>
<!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>XML from SQL 2005</title>
</head>
<body>
<div id="pageContent">
<form id="form1" runat="server">
<asp:Button ID="GetDataButton" runat="server" Text="Go get data"
OnClick="GetDataButton_Click" />
<br /><br />
<asp:TreeView ID="TreeView1" runat="server">
</asp:TreeView>
</form>
</div>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;

public partial class Default : System.Web.UI.Page
{
private TreeNode Root;
protected void GetDataButton_Click(object sender, EventArgs e)
{
string connString = "SERVER=(local)\\SQLEXPRESS;ATTACHDBFILENAME=|DataDirectory|mydata.mdf;INTEGRATED SECURITY=sspi"; //;USER INSTANCE=true;";
using (SqlConnection conn = new SqlConnection(connString))
{
Root = new TreeNode("Families");
TreeView1.Nodes.Add(Root);
string cmdText = "SELECT * FROM SampleData";
SqlCommand cmd = new SqlCommand(cmdText, conn);
cmd.Connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
SqlXml xml = reader.GetSqlXml(1);
ProcessData(xml);
}
reader.Close();
cmd.Connection.Close();
}
}
private void ProcessData(SqlXml xml)
{
XmlReader reader = xml.CreateReader();
TreeNode familyNode=null, parentsNode=null, childrenNode=null;
while (reader.Read())
{
if (reader.Depth == 1 && reader.NodeType == XmlNodeType.Element)
{
familyNode = new TreeNode(reader.ReadElementContentAsString());
Root.ChildNodes.Add(familyNode);
parentsNode = new TreeNode("Parents");
childrenNode = new TreeNode("Children");
familyNode.ChildNodes.Add(parentsNode);
familyNode.ChildNodes.Add(childrenNode);
}
if (reader.Depth == 2 && reader.NodeType == XmlNodeType.Element)
{
string name = reader["name"];
string role = reader["Role"];
TreeNode member = new TreeNode(name);
if (role.ToLowerInvariant().Equals("father") || role.ToLowerInvariant().Equals("mother"))
parentsNode.ChildNodes.Add(member);
else
if (role.ToLowerInvariant().Equals("child"))
childrenNode.ChildNodes.Add(member);
}
}
}
}</source>

== The ASPX Page and XSLT to style the XML from SQL Server (C#)==



<source lang="csharp">
<%@ Page Language="C#"
AutoEventWireup="true"
CodeFile="Default.aspx.cs"
Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<asp:xml id="Xml1" runat="server" transformsource="~/Data.xslt"/>
File:
using System;
using System.Data;
using System.Data.SqlClient;
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.IO;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
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";
XmlDocument x = new XmlDocument();
XPathNavigator xpathnav = x.CreateNavigator();
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
SqlCommand command = new SqlCommand("select * from Customers as Customer for XML AUTO, ELEMENTS", conn);
using (XmlWriter xw = xpathnav.PrependChild())
{
xw.WriteStartElement("Customers");
using (XmlReader xr = command.ExecuteXmlReader())
{
xw.WriteNode(xr, true);
}
xw.WriteEndElement();
}
}
Xml1.XPathNavigator = xpathnav;
}
}
File: Data.xslt
<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>
<xsl:template match="/">
<h3>List of Customers</h3>
<table border="1">
<tr>
<td>Company Name</td><td>Contact Name</td><td>Contact Title</td>
</tr>
<xsl:apply-templates select="//Customer"/>
</table>
</xsl:template>
<xsl:template match="Customer">
<tr>
<td><xsl:value-of select="CompanyName"/></td>
<td><xsl:value-of select="ContactName"/></td>
<td><xsl:value-of select="ContactTitle"/></td>
</tr>
</xsl:template>
</xsl:stylesheet></source>

== The ASPX Page and XSLT to style the XML from SQL Server (VB)==



<source lang="csharp">
<%@ Page Language="VB"
AutoEventWireup="false"
CodeFile="Default.aspx.vb"
Inherits="_Default" %>

<asp:xml id="Xml1" runat="server" transformsource="~/Data.xslt"/>
File: Data.xslt
Imports System.Data
Imports System.Data.SqlClient
Imports System.IO
Imports System.Xml
Imports System.Xml.XPath
Imports System.Xml.Xsl
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"
Dim x As New XmlDocument()
Dim xpathnav As XPathNavigator = x.CreateNavigator()
Using conn As New SqlConnection(connStr)
conn.Open()
Dim command As New SqlCommand("select * from Customers as Customer " & _
"for XML AUTO, ELEMENTS", conn)
Using xw As XmlWriter = xpathnav.PrependChild()
xw.WriteStartElement("Customers")
Using xr As XmlReader = command.ExecuteXmlReader()
xw.WriteNode(xr, True)
End Using
xw.WriteEndElement()
End Using
End Using
Xml1.XPathNavigator = xpathnav
End Sub
End Class
File: Data.xslt
<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>
<xsl:template match="/">
<h3>List of Customers</h3>
<table border="1">
<tr>
<td>Company Name</td><td>Contact Name</td><td>Contact Title</td>
</tr>
<xsl:apply-templates select="//Customer"/>
</table>
</xsl:template>
<xsl:template match="Customer">
<tr>
<td><xsl:value-of select="CompanyName"/></td>
<td><xsl:value-of select="ContactName"/></td>
<td><xsl:value-of select="ContactTitle"/></td>
</tr>
</xsl:template>
</xsl:stylesheet></source>

== XML query==



<source lang="csharp">
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="XmlQuery" %>
<!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>
<form id="form1" runat="server">
<div>
<asp:Literal id="XmlText" runat="server"></asp:Literal>
</div>
</form>
</body>
</html>
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.Web.Configuration;
using System.Data.SqlClient;
using System.Xml;
using System.Text;
public partial class XmlQuery : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string connectionString = WebConfigurationManager.ConnectionStrings["Northwind"].ConnectionString;
string customerQuery = "SELECT FirstName, LastName FROM Employees FOR XML AUTO, ELEMENTS";
SqlConnection con = new SqlConnection(connectionString);
SqlCommand com = new SqlCommand(customerQuery, con);
StringBuilder str = new StringBuilder();
try
{
con.Open();
XmlReader reader = com.ExecuteXmlReader();
while (reader.Read())
{
if ((reader.Name == "Employees") && (reader.NodeType == XmlNodeType.Element))
{
reader.ReadStartElement("Employees");
str.Append(reader.ReadElementString("FirstName"));
str.Append(" ");
str.Append(reader.ReadElementString("LastName"));
str.Append("<br>");
reader.ReadEndElement();
}
}
reader.Close();
}
finally
{
con.Close();
}
XmlText.Text = str.ToString();
}
}</source>

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ASP.NET Tutorial/ADO.net Database/to XML - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия