admin.aspx.cs

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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 xmlOp;

public partial class setAdmin : System.Web.UI.Page
{
    string xmlFile= ConfigurationManager.AppSettings["xmlFile"];

    Logic lg = new Logic();   //创建Logic类对象 
    DataSet ds = new DataSet();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            //验证是否管理员
            if (Convert.ToString(Session["NormalAdmin"]) != "yes")
            {
                Response.Write("你没有权限查看!");
                Response.End();
            }

            BindToDataGrid(); //数据绑定到DataGrid控件
        }
    }

    //数据绑定到DataGrid，显示班级所有成员
    private void BindToDataGrid()
    {
        try
        {
            XmlOp op = new XmlOp(xmlFile);
            ds = op.GetDs("//Root");
            this.DataGrid1.DataKeyField = "Name";
            this.DataGrid1.DataSource = ds;
            this.DataGrid1.DataBind();
        }
        catch
        {
            Response.Write("出现不明错误 !");
            Response.End();
        }
    }

    //每项数据绑定时事件
    protected void DataGrid1_ItemDataBound(object sender, DataGridItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
        {
            ((LinkButton)(e.Item.Cells[6].Controls[0])).Attributes.Add("onclick", "return confirm('你确定要删除吗？');");
            if (Convert.ToString(Session["SuperAdmin"]) == "yes") //若为超级管理员
            {
                ((Button)(e.Item.Cells[7].FindControl("btnSetAdmin"))).Visible = true;  //显示设置管理员按钮
                ((Button)(e.Item.Cells[7].FindControl("btnNoAdmin"))).Visible = true;   //显示取消管理员按钮
            }
        }
    }

    //删除某个同学
    protected void DataGrid1_DeleteCommand(object source, DataGridCommandEventArgs e)
    {
        XmlOp op = new XmlOp(xmlFile);
        string _delName = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString(); //取得关键字段
        string _delNode = "//Root/Student[Name='" + _delName + "']";
        string _photo = op.SelectNodeText("//Root/Student[Name='" + _delName + "']/Photo");

        if (op.DeleteNode(_delNode))    //删除操作
        {
            op.Save(xmlFile); //保存Xml文档
            if (System.IO.File.Exists(HttpContext.Current.Server.MapPath(_photo)))
            {
                try
                {
                    //删除相应图片
                    System.IO.File.Delete(HttpContext.Current.Server.MapPath(_photo));
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
            Response.AddHeader("refresh", "0"); //刷新整个页面
        }
    }

    //一般管理员的设置
    protected void DataGrid1_ItemCommand(object source, DataGridCommandEventArgs e)
    {
        XmlOp op = new XmlOp(xmlFile);
        //设置一般管理员
        if (e.CommandName == "SetAdmin")
        {
            string _adminName = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
            if (op.UpdateAttrib("//Root/Student[Name='" + _adminName + "']", "Admin", "yes"))
            {
                op.Save(xmlFile);
                lg.Msg("设置成功!");
                BindToDataGrid();
            }
        }

        //取消一般管理员
        if (e.CommandName == "NoAdmin")
        {
            string _adminName = this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
            if (op.UpdateAttrib("//Root/Student[Name='" + _adminName + "']", "Admin", "no"))
            {
                op.Save(xmlFile);
                lg.Msg("设置成功!");
                BindToDataGrid();
            }
        }
    }
    
}