addrole.aspx.cs

《精通ASP.NET2.0网络应用系统开发》书中的源码

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 StudentManager;

public partial class AddRole : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            BindTreeViewData();
        }

        ///设置添加按钮的可用性
        AddBtn.Enabled = RoleTreeView.Nodes.Count <= 0 || RoleTreeView.SelectedNode == null ? false : true;
    }

    private void BindTreeViewData()
    {
        StudentManager.Tree tree = new StudentManager.Tree();
        tree.BindLeftTreeView(RoleTreeView,true,false);
    }

    protected void AddBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {
            ///定义类
            StudentManager.Role role = new StudentManager.Role();
            try
            {
                ///添加新角色
                role.AddRole(RoleName.Text.Trim(), Int32.Parse(RoleTreeView.SelectedNode.Value));              

                ///显示操作结果信息
                Response.Write("<script>window.alert('" + ASPNET2System.OPERATIONADDSUCCESSMESSAGE + "')</script>");
            }
            catch (Exception ex)
            {
                ///显示添加操作中的失败、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");
    }

    protected void RoleTreeView_SelectedNodeChanged(object sender, EventArgs e)
    {
        AddBtn.Enabled = RoleTreeView.SelectedNode == null ? false : true;
    }
}