SQLXML与XSLT

         在网上找了些有关SQLXML与XSLT的文章，重新整理和调试了下。开发环境SQL2008，VS2010，SQLXML4.0可以从网上下载。测试数据库用的是NorthWind，我下的是mdb,然后导入到SQL2008中的。

 

        新建网站项目，安装完SQLXML4.0后，添加引用，找到系统盘下\Program Files\SQLXML 4.0\bin\Microsoft.Data.SqlXml.dll. 添加完后，在web.config中就生成了这样的语句：

<add assembly= "Microsoft.Data.SqlXml, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845DCD8080CC91"/></assemblies>

 

下面列出主要的代码。

Default.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Text;
using System.Xml;
using System.Xml.XPath;
using System.Xml.Xsl;
using System.Data;
using System.IO;
using System.Data.Sql;
using Microsoft.Data.SqlXml;

public partial class _Default : System.Web.UI.Page
{
        

         protected void Page_Load( object sender, EventArgs e)
        {

                 string NorthwindConnstring = "Provider=SQLOLEDB;Server=(local);database=Nwind;UID=sa;PWD=password";
            
                
                        
                         string sqlSelect;
                        sqlSelect = "SELECT * FROM Emp for xml auto, elements";
                        SqlXmlCommand sqlXmlCommand = new SqlXmlCommand(NorthwindConnstring);
                        sqlXmlCommand.CommandText = sqlSelect;
                        sqlXmlCommand.ClientSideXml = true;
                        sqlXmlCommand.XslPath = Server.MapPath( "EmployeeTransform.xslt");
                        sqlXmlCommand.RootTag = "NewDataSet";
                        sqlXmlCommand.ExecuteToStream(Response.OutputStream);
                        Response.End();

                

        }
}

 

EmployeeTransform.xslt:

<? xml version ="1.0" encoding ="utf-8" ?>
< xsl:stylesheet version ="1.0"    
                                 xmlns:xsl ="http://www.w3.org/1999/XSL/Transform"
                                 xmlns:msxsl ="urn:schemas-microsoft-com:xslt" exclude-result-prefixes ="msxsl"
                                 xmlns:ms ="urn:schemas-microsoft-com:xslt"
                                 xmlns:vcsharp ="urn:vcsharp-com"
                                 xmlns:dt ="urn:schemas-microsoft-com:datatypes"
                                 >
     < xsl:output method ="html" indent ="yes" doctype-public ="-//W3C//DTD HTML 3.2 Final//EN" />
     < xsl:template match ="NewDataSet" >
        　　 < HTML >
            　　 < HEAD >
                　　 < TITLE >XSLT显示 </ TITLE >
                 </ HEAD >
            　　 < BODY >
                　　 < TABLE style ="BORDER-COLLAPSE: collapse;font-size:9pt;" bordercolor ="#000000" cellspacing ="0" cellpadding ="6" align ="center" border ="1" >
                    　　 < TR style ="text-align:center;font-weight:bold;background-color:#336699;color:#FFFFFF;" >
                        　　 < TD >EmployeeID </ TD >
                        　　 < TD >Name </ TD >
                        　　 < TD >Title </ TD >
                        　　 < TD >TitleOfCourtesy </ TD >
                        　　 < TD >BirthDate </ TD >
                        　　 < TD >HireDate </ TD >
                        　　 < TD >Address </ TD >
                        　　 < TD >City </ TD >
                        　　 < TD >Region </ TD >
                        　　 < TD >PostalCode </ TD >
                        　　 < TD >Country </ TD >
                        　　 < TD >HomePhone </ TD >
                        　　 < TD >Extension </ TD >
                        　　 < TD >Photo </ TD >
                        　　 < TD >Notes </ TD >
                        　　 <!-- <TD>PhotoPath</TD>-->
                         </ TR >
< xsl:apply-templates />
                     </ TABLE >
                 </ BODY >
             </ HTML >
     </ xsl:template >
    
    
     < xsl:template match ="Emp" >
        　　 < TR style ="background-color:#99CCEE;color:#000000;" >
            　　 < TD >
                 < xsl:value-of select ="EmployeeID" />
                　　 < xsl:variable name ="EmployeeID" select ="EmployeeID" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="LastName" />
                 < xsl:text disable-output-escaping ="yes" > &nbsp; </ xsl:text >
                 < xsl:value-of select ="FirstName" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="Title" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="TitleOfCourtesy" /> </ TD >
                 < TD >
            　 < xsl:value-of select ="ms:format-date(BirthDate, 'MMM dd, yyyy')" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="ms:format-date(HireDate, 'MMM dd, yyyy')" />
                
                 </ TD >
            　　 < TD >
                 < xsl:value-of select ="Address" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="City" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="Region" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="PostalCode" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="Country" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="HomePhone" /> </ TD >
            　　 < TD >
                 < xsl:value-of select ="Extension" /> </ TD >
            　　 < TD >
                　　 < xsl:choose > < xsl:when test="string-length( Photo) > 0">
                         <!-- <xsl:variable name="fname">
                             <xsl:value-of select="ImgUrl"/>
                         </xsl:variable>-->

                         < xsl:variable name ="fname" >
                             < xsl:value-of select ="EmployeeID" />
                         </ xsl:variable >

                         　　 < img src ="GetImage.aspx?EmployeeID={$fname}" >
                            
                            　　 <!-- <xsl:attribute name="src"> 为什么用attribute name="src" 属性就不行呢-->
                                <!-- 　　 <xsl:text>GetImage.aspx?EmployeeID={$EmployeeID}</xsl:text>-->
                                 <!-- <xsl:value-of select="$fname" />
                                 </xsl:attribute>-->
                                 　　
                                    
                         </ img >
                        　　
                        　　
                     </ xsl:when > < xsl:otherwise >
                         < xsl:value-of select ="Photo" /> </ xsl:otherwise >
                     </ xsl:choose >
                　
                　　
             </ TD >
            　　 < TD >
                　　 < xsl:choose > < xsl:when test="string-length( Notes) > 50">
                        　　 < xsl:value-of select ="substring(Notes, 0, 50)" /> < xsl:text >... </ xsl:text >
                        　　
                     </ xsl:when > < xsl:otherwise >
                         < xsl:value-of select ="Notes" /> </ xsl:otherwise > </ xsl:choose >
                　　
                　　
             </ TD >
            　<!-- 　<TD>
                　　<xsl:variable name="photoPath">
                    <xsl:value-of select="PhotoPath"/>
                </xsl:variable>
                　　<xsl:if test="string-length($photoPath) > 0">
                    　　<a href="{$photoPath}">
                        　　 <xsl:value-of select="PhotoPath"/>
                        　　
                    </a>
                    　　
                </xsl:if>
                　　
            </TD>-->
            　　
         </ TR >
        　　
     </ xsl:template > </ xsl:stylesheet >

 

GetImage.aspx.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Data.Sql;
using System.Data.SqlClient;
using System.Data;
using Microsoft.Data.SqlXml;
using System.IO;

public partial class GetImage : System.Web.UI.Page
{
         protected void Page_Load( object sender, EventArgs e)
        {
                 string employeeID = Request.QueryString[ "EmployeeID"];
                 if (employeeID == string.Empty || employeeID == null)
                {
                         return;
                }
                 byte[] imgByteArray = GetImage2(employeeID);
                Response.ContentType = "image/jpeg";
                 int offset = 78;
                 //读取图片并作图片格式转换，原图是BMP图，在网页中显示使用JPG图片，同时使图片感官效果优化：
                System.IO.MemoryStream mstream = new System.IO.MemoryStream();
                System.IO.MemoryStream stream = new System.IO.MemoryStream();
                mstream.Write(imgByteArray, offset, imgByteArray.Length - offset);
                System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(mstream);
                Bitmap bmpTmp = new Bitmap(bmp.Width / 2, bmp.Height / 2); //尺寸缩小为50%
                Graphics g = Graphics.FromImage(bmpTmp);
                g.CompositingQuality = CompositingQuality.HighQuality;
                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
                Rectangle destRect = new Rectangle(0, 0, bmpTmp.Width, bmpTmp.Height);
                Rectangle srcRect = new Rectangle(0, 0, bmp.Width, bmp.Height);
                g.DrawImage(bmp, destRect, srcRect, GraphicsUnit.Pixel);
                bmpTmp.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
                g.Dispose();
                bmp.Dispose();
                 byte[] byteReturn = stream.ToArray();
                mstream.Close();
                stream.Close();
                Response.OutputStream.Write(byteReturn, 0, byteReturn.Length);
                Response.End();
        }
         private byte[] GetImage2( string employeeID)
        {
                 string NorthwindConnstring;
                NorthwindConnstring = "data source=(local);database=Nwind;uid=SA;pwd=password";
                 using (SqlConnection conn = new SqlConnection(NorthwindConnstring))
                {
                         string sqlSelect = "SELECT Photo FROM Emp WHERE EmployeeID = " + employeeID;
                        SqlCommand cmd = conn.CreateCommand();
                        cmd.CommandText = sqlSelect;
                        conn.Open();
                         using (SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.SingleRow))
                        {
                                 if (dr.Read())
                                {
                                         if (dr[0] != null)
                                        {
                                                 byte[] byteImg = ( byte[])dr[0];
                                                 return byteImg;
                                        }
                                }
                        }
                }
                 return null;
        }

}