当前位置: 首页 > 图文教程 > 网络编程 > ASP > 制作一个简单的服务器端控制

ASP
ASP基础讲座(下)
解决IIS5 HTTP500内部错误
ASP 3.0高级编程(四十六)
ASP 3.0高级编程(四十五)
ASP 3.0高级编程(四十四)
ASP 3.0高级编程(四十三)
ASP 3.0高级编程(四十二)
ASP 3.0高级编程(四十一)
ASP 3.0高级编程(三十九)
ASP 3.0高级编程(三十八)
ASP 3.0高级编程(三十七)
ASP 3.0高级编程(三十六)
ASP 3.0高级编程(三十五)
ASP 3.0高级编程(三十四)
ASP 3.0高级编程(三十三)
ASP 3.0高级编程(三十二)
ASP 3.0高级编程(三十一)
ASP错误代码说明
jscript错误代码及相应解释大全
ASP错误处理

ASP 中的 制作一个简单的服务器端控制


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 55 ::
收藏到网摘: n/a

  2000082805.aspx
-------------------------------------------------------------
<%@ Register TagPrefix="CJ" Namespace="cjServerControls" %>
<html>
  <head>
  </head>
  <body>

    <form method="post" action="2000082605.aspx" runat="server">
<CJ:xmlDocReader  listText="au_id" listValue="au_id" runat="server"
path="C:\Inetpub\wwwroot\myASP\tutorials\authors.xml" />
    </form>

  </body>
</html>


2000082805a.cs
-------------------------------------------------------------
using System;
using System.Data;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace cjServerControls
{
public class xmlDocReader : Control, INamingContainer
{
string _xmlPath;
string _listID;
string _listValue;

public string Path
{
get { return _xmlPath; }
set { _xmlPath = value; }
}

public string listText
{
get { return _listID; }
set { _listID = value; }
}

public string listValue
{
get {return _listValue; }
set {_listValue = value; }
}

//Were are creating a member here so we can access it throughout the class
DropDownList _DDL;
DataGrid _DG;
FileStream fs;
StreamReader sr;
DataSet ds;
protected override void PreRender()
{
if (Page.IsPostBack) {
DataView dv = new DataView(ds.Tables[0]);
dv.RowFilter = listValue + "='" + _DDL.SelectedItem.Text + "'";
_DG = new DataGrid();
_DG.DataSource = dv;
_DG.DataBind();
Controls.Add(_DG);
}
}


protected override void CreateChildControls()
{
fs = new FileStream(Path, FileMode.Open, FileAccess.Read);
sr = new StreamReader(fs);
ds = new DataSet();
ds.ReadXml(sr);
fs.Close();

_DDL = new DropDownList();
_DDL.DataTextField = listText;
_DDL.DataValueField = listValue;
_DDL.AutoPostBack = true;
_DDL.DataSource = ds.Tables[0].DefaultView;
_DDL.DataBind();
Controls.Add(_DDL);


}
}
}

authors.xml
-------------------------------------------------------------
<root>
<schema id="DocumentElement" targetNamespace="" xmlns="http://www.w3.org/1999/XMLSchema"
xmlns:xdo="urn:schemas-microsoft-com:xml-xdo" xdo:DataSetName="DocumentElement">
    <element name="Table">
        <complexType content="elementOnly">
            <element name="au_id" type="string"></element>
            <element name="au_lname" type="string"></element>
            <element name="au_fname" type="string"></element>
            <element name="phone" type="string"></element>
            <elem