删除、赋值、二级联动

 DAL层  
 //删除
        public int Del(int id)
        {
            try
            {
                var obj = db.GGMM3.FirstOrDefault(u => u.SId == id);
                if (obj != null)
                {
                    db.GGMM3.Remove(obj);
                }
                return db.SaveChanges();
            }
            catch (Exception)
            {

                throw;
            }
        }

  控制器的代码
　　
      //删除
     [HttpPost]
       public IHttpActionResult Del(int id)
         {
      return Json(dal.Del(id));
        }

<el-button
          size="mini"
          type="danger"
          @click="handleDelete(scope.$index, scope.row)">删除</el-button>

      handleDelete(index, row) {
          if(confirm(‘确定要删除吗‘)){
              this.$axios.post(‘http://localhost:51049/api/Goode/Del?id=‘+row.SId).then(res=>{
               if(res.data>0){
                 alert(‘删除成功‘)
                 this.loadData();
               }else{
                 alert(‘删除失败‘)
               }
         })
      }
        console.log(index, row);
      },

  <el-button
          size="mini"
          @click="handleEdit( scope.row)">编辑</el-button>

  //赋值
      handleEdit(row) {
        this.$router.push({
            path: ‘/edit‘,
            query:row 
        })
        //console.log(index, row);
      },

  
        //赋值数据
        this.form= this.$route.query;
        //赋值图片
        this.imageUrl=this.form.SImg;
        //赋值分类
        this.form.TId=this.$route.query.TName;
        
        //赋值商品分类
        this.optAName=this.$route.query.CName
        this.optBName=this.$route.query.CCName

   DAL 
//联动
        public List<GoodeModel> LianDong(int pid)
        {
            return db.GGMM.Where(u => u.PId == pid).ToList();
        }

控制器

  //联动
        [HttpGet]
        public IHttpActionResult LianDong(int pid)
        {
            return Json(dal.LianDong(pid));
        }

  <el-row v-show="isShow">
    <el-col :span="10">
     <el-cascader-panel :options="options" :props="{value:‘CId‘,label:‘CName‘}" ref="optA" @change="LianDong2"></el-cascader-panel>
      </el-col>
     <el-col :span="10">
     <el-cascader-panel :options="options2" :props="{value:‘CId‘,label:‘CName‘}" ref="optB"></el-cascader-panel>
    </el-col>
    </el-row>

 //二级联动1
      LianDong1(){
          this.$axios.get(‘http://localhost:51049/api/Goode/LianDong?pid=0‘).then(res=>{
              this.options=res.data
          })
      },
      //二级联动2
      LianDong2(value){
              this.form.CId=value[0];
              this.$axios.get(`http://localhost:51049/api/Goode/LianDong?pid=${value[0]}`).then(res=>{
              this.options2=res.data
          })
      },