updaterole.aspx.cs

一个简单的网上书店形式

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 ASPNET2BBS;
using System.Data.SqlClient;

public partial class UpdateRole : System.Web.UI.Page
{
    int nRoleID = -1;

    protected void Page_Load(object sender, EventArgs e)
    {
        ///获取ID的值
        if (Request.Params["RoleID"] != null)
        {
            nRoleID = Int32.Parse(Request.Params["RoleID"].ToString());
        }

        if (!Page.IsPostBack)
        {
            if (nRoleID > -1)
            {
                ///绑定控件的数据
                BindRoleData(nRoleID);
            }
        }

        ///设置更新按钮的可用性
		UpdateBtn.Enabled = nRoleID > -1 ? true : false;
    }

    private void BindRoleData(int nRoleID)
    {
        ///获取数据
        Role role = new Role();
        SqlDataReader recr = role.GetSingleRole(nRoleID);

        ///读取数据
        if (recr.Read())
        {
            ///显示数据
            RoleName.Text = recr["RoleName"].ToString();
        }
        recr.Close();          ///关闭数据源
    }

    protected void UpdateBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {
            ///定义类
            ASPNET2BBS.Role role = new ASPNET2BBS.Role();
            try
            {
                ///修改角色的属性
                role.UpdateRole(nRoleID,RoleName.Text.Trim());

                ///显示操作结果信息
                Response.Write("<script>window.alert('" + ASPNET2System.OPERATIONUPDATESUCCESSMESSAGE + "')</script>");
            }
            catch (Exception ex)
            {
                ///显示修改操作中的失败、错误信息
                Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
                    + ASPNET2System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }
    }

    protected void ReturnBtn_Click(object sender, EventArgs e)
    {
        ///返回管理页面
        Response.Redirect("~/DesktopModules/Role/RoleManage.aspx");
    }
}