WebPartManager与SQL

 

WebPartManager与SQL 

原文链接：http://blog.sina.com.cn/s/blog_50f37f0b01011s4r.html

 

今天想学习WebPartManager，在页面上添加了空间之后，运行时发生错误，提示：“webpartmanager SQL 网络接口, error: 26 - 定位指定的服务器/实例时出错 ”，解决方法如下：

1.在web.config文件中添加如下代码：

<connectionStrings>

    <remove name="LocalSqlServer" />

    <add name="LocalSqlServer" connectionString="Data Source=PANGXX;Initial Catalog=aspnetdb;Persist Security Info=True;User ID=sa;Password=123456"

    providerName="System.Data.SqlClient" />

  </connectionStrings>

运行后提示：sa登录失败，经查是由于没有aspnetdb数据库。

2.运行目录C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727下的aspnet_regsql.exe文件，采用默认设置，即安装了aspnetdb数据库，之后运行程序，大功告成。

 

using System;

using
4000
System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

public partial class DisplayModeMenu : System.Web.UI.UserControl

{

    WebPartManager webpartmanager;

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Page_Init(object sender, EventArgs e)

    {

        Page.InitComplete+=new EventHandler(InitComplete);

    }

    public void InitComplete(object sender, EventArgs e)

    {

        webpartmanager = WebPartManager.GetCurrentWebPartManager(Page);

        string browseModeName = WebPartManager.BrowseDisplayMode.Name;

        foreach (WebPartDisplayMode mode in webpartmanager.SupportedDisplayModes)

        {

            string modename = mode.Name;

            if (mode.IsEnabled(webpartmanager))

            {

                ListItem listitem = new ListItem(modename, modename);

                DropDownList1.Items.Add(listitem);

            }

        }

    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

    {

        string selectedmode = DropDownList1.SelectedValue;

        WebPartDisplayMode mode = webpartmanager.SupportedDisplayModes[selectedmode];

        if (mode != null)

        {

            webpartmanager.DisplayMode = mode;

        }

    }

    public void Page_PreRender(object sender, EventArgs e)

    {

        ListItemCollection items = DropDownList1.Items;

        int selectedIndex = items.IndexOf(items.FindByText(webpartmanager.DisplayMode.Name));

        DropDownList1.SelectedIndex = selectedIndex;

    }

}