categorymanage.aspx.cs

精通网络应用系统开发 光盘 该书是人民邮电出版社出版的

using System;
using 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;
using System.Collections.Generic;
using System.Data.Linq;

public partial class DesktopModules_Category_CategoryManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            BindCategoryData();
            ///显示选择节点的文本
            if (CategoryView.SelectedNode != null)
            {
                BindCategoryData(Int32.Parse(CategoryView.SelectedNode.Value));
            }
        }
        ///设置按钮的可用性
        AddBtn.Enabled = UpBtn.Enabled = DownBtn.Enabled = UpdateBtn.Enabled
            = DeleteBtn.Enabled = CategoryView.SelectedNode == null ? false : true;
        ///添加删除确认对话框
        DeleteBtn.Attributes.Add("onclick", "return confirm('"
            + ASPNET35System.OPERATIONDELETEMESSAGE + "');");
    }
    private void BindCategoryData()
    {
        CategoryM category = new CategoryM();
        category.BindCategoryTreeView(CategoryView, true, "-1");
    }
    private void BindCategoryData(int nCategoryID)
    {
        CategoryM category = new CategoryM();
        //获取子节点
        Category recc = category.GetSingleCategory(nCategoryID);
        if (recc!=null)
        {
            //配置节点属性
            Desn.Text = recc.Desn;
            EnDesn.Text = recc.EnDesn;
            Url.Text = recc.Url;
            ASPNET35System.SetListBoxItem(IsDirList, recc.IsDir.ToString());
        }
    }

    protected void CategoryView_SelectedNodeChanged(object sender, EventArgs e)
    {
        ///设置按钮的可用性
        AddBtn.Enabled = UpBtn.Enabled = DownBtn.Enabled = UpdateBtn.Enabled
            = DeleteBtn.Enabled = CategoryView.SelectedNode == null ? false : true;
        ///显示选择节点的文本
        if (CategoryView.SelectedNode != null)
        {
            CategoryM category = new CategoryM();
            category.BindCategoryTree(CategoryView, true, "-1");
        }
    }
    protected void AddBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {
            if (CategoryView.SelectedNode == null)
            {
                Response.Write("<script>window.alert('"
                     + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
                return;
            }
            ///定义类
            CategoryM category = new CategoryM();
            try
            {   ///添加新数据
                category.AddCategory(Desn.Text.Trim(), EnDesn.Text.Trim(),
                     Url.Text.Trim(),
                     Int32.Parse(CategoryView.SelectedNode.Value),
                     CategoryView.SelectedNode.ChildNodes.Count + 1,
                     Int32.Parse(IsDirList.SelectedValue));
                BindCategoryData();
                ///显示操作结果信息
                Response.Write("<script>window.alert('"
                    + ASPNET35System.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="
                    + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }
    }
    protected void UpdateBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {   ///验证是否选择修改的数据
            if (CategoryView.SelectedNode == null)
            {
                Response.Write("<script>window.alert('"
                    + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
                return;
            }
            ///定义类
            CategoryM category = new CategoryM();
            try
            {   ///添加新数据
                category.UpdateCategory(
                    Int32.Parse(CategoryView.SelectedNode.Value),
                    Desn.Text.Trim(), EnDesn.Text.Trim(),
                    Url.Text.Trim(),
                    Int32.Parse(IsDirList.SelectedValue));
                ///显示操作结果信息
                Response.Write("<script>window.alert('"
                    + ASPNET35System.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="
                    + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }
    }
    protected void DeleteBtn_Click(object sender, EventArgs e)
    {
        ///验证是否选择修改的数据
        if (CategoryView.SelectedNode == null)
        {
            Response.Write("<script>window.alert('"
                + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
            return;
        }
        ///验证选择节点的子节点是否为空
        if (CategoryView.SelectedNode.ChildNodes.Count > 0)
        {
            Response.Write("<script>window.alert('"
                + ASPNET35System.OPERATIONCHILADRENDATANOTNULL + "')</script>");
            return;
        }
        ///定义类
        CategoryM category = new CategoryM();
        try
        {   ///添加新数据
            category.DeleteCategory(
                Int32.Parse(CategoryView.SelectedNode.Value));
            BindCategoryData();
            ///显示操作结果信息
            Response.Write("<script>window.alert('"
                + ASPNET35System.OPERATIONDELETESUCCESSMESSAGE + "')</script>");
        }
        catch (Exception ex)
        {   ///显示修改操作中的失败、错误信息
            Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
               + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
               + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
        }
    }
    protected void UpDownBtn_Click(object sender, EventArgs e)
    {
        string sCommandName = ((Button)sender).CommandName;
        ///验证是否选择修改的数据
        if (CategoryView.SelectedNode == null)
        {
            Response.Write("<script>window.alert('"
                + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
            return;
        }
        ///定义类
        CategoryM category = new CategoryM();
        try
        {   ///添加新数据
            category.UpdateCategoryOrder(
                Int32.Parse(CategoryView.SelectedNode.Value), sCommandName);
            BindCategoryData();
            ///显示操作结果信息
            Response.Write("<script>window.alert('"
                + ASPNET35System.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="
                + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
        }
    }
}