Asp.NETPersonnalBlogSystem/Admin/CategoryList.aspx.cs

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using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using Asp.NETPersonnalBlogSystem.BLL;
using Asp.NETPersonnalBlogSystem.Models;

namespace Asp.NETPersonnalBlogSystem.Admin
{
    /// <summary>
    /// 分类管理页面
    /// 提供分类的增删改查功能
    /// </summary>
    public partial class CategoryList : System.Web.UI.Page
    {
        private CategoryService categoryService = new CategoryService();

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadCategories();
            }
        }

        /// <summary>
        /// 加载分类列表
        /// </summary>
        private void LoadCategories()
        {
            var categories = categoryService.GetAllCategories();
            gvCategories.DataSource = categories;
            gvCategories.DataBind();
        }

        /// <summary>
        /// 获取分类下的文章数量
        /// </summary>
        protected int GetArticleCount(int categoryId)
        {
            return categoryService.GetArticleCountByCategory(categoryId);
        }

        /// <summary>
        /// 保存分类
        /// </summary>
        protected void btnSave_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(txtCategoryName.Text.Trim()))
            {
                ShowMessage("请输入分类名称！");
                return;
            }

            int categoryId = Convert.ToInt32(hfCategoryId.Value);
            if (categoryId > 0 && categoryService.IsCategoryNameExist(txtCategoryName.Text.Trim(), categoryId))
            {
                ShowMessage("分类名称已存在！");
                return;
            }
            if (categoryId == 0 && categoryService.IsCategoryNameExist(txtCategoryName.Text.Trim()))