GridView常用增删改的示例(以后方便备用)

代码

    
      

        //GridView的绑定方法一定要在!ISPOSTBACK中 
      
    
      
 
       private 
         
       void 
        bind()
{
 GridView1.DataKeyNames  
       = 
         
       new 
         
       string 
       [] {  
       " 
       id 
       " 
        }; 
      
   
     

    
       //DataKeyNames为数组id 下面好调用 重要
   
     
   
     

    
       GridView1.DataSource 
    
      =
    
       
    
      new
    
       xh.shop.DAL.news_category().GetList(
    
      ""
    
      );
 GridView1.DataBind();
 }//绑定函数
    
      

 
    
      protected
    
       
    
      void
    
       GridView1_RowEditing(
    
      object
    
       sender, GridViewEditEventArgs e)
 { //进入编辑栏状态

 
    
       
   
     
   
     

    
       GridView1.EditIndex 
    
      =
    
       e.NewEditIndex;
 bind();
 }

 
    
      protected
    
       
    
      void
    
       GridView1_RowUpdating(
    
      object
    
       sender, GridViewUpdateEventArgs e)
 {//更新方法

 
   
     
   
     

    
       
    
      string
    
       id 
    
      =
    
       GridView1.DataKeys[e.RowIndex].Values[
    
      0
    
      ].ToString();
 
    
      //
    
      取出ID值
    
      

    
       
    
      string
    
       name 
    
      =
    
       ((System.Web.UI.WebControls.TextBox)(GridView1.Rows[e.RowIndex].Cells[
    
      0
    
      ].Controls[
    
      0
    
      ]).FindControl(
    
      "
    
      TextBox1
    
      "
    
      )).Text.ToString().Trim();
    
      //
    
      取得文本框中输入的值注意.FindControl("TextBox1")的使用一般情况下不用 除非出错
 
    
      //
    
      下面调用更新方法 我使用的是更新实体库
    
      

    
       
    
      if
    
       (name.Length 
    
      ==
    
       
    
      0
    
      )
 {
 Response.Write(
    
      "
    
      <script language='JavaScript'>alert('请不要为空')</script>
    
      "
    
      );
 
    
      return
    
      ;
 }
 
    
      //
    
      判断是否为空
    
      

    
       
    
      if
    
       (
    
      !
    
      new
    
       xh.shop.DAL.news_category().Exists(name))
 {
 Response.Write(
    
      "
    
      <script language='JavaScript'>alert('类别重复')</script>
    
      "
    
      );
 ((System.Web.UI.WebControls.TextBox)(GridView1.Rows[e.RowIndex].Cells[
    
      0
    
      ].Controls[
    
      0
    
      ]).FindControl(
    
      "
    
      TextBox1
    
      "
    
      )).Text 
    
      =
    
       
    
      ""
    
      ;
 
    
      return
    
      ;
 }
 
    
      //
    
      判断是否有重复类容 判断条件是自己定义的方法
    
      

    
       xh.shop.Model.news_category model 
    
      =
    
      new
    
       xh.shop.Model.news_category();
   
     
   
     

    
       //自定义的实体
 model.id
    
      =
    
      Convert.ToInt32( id);
 model.name
    
      =
    
      name;
 
    
      new
    
       xh.shop.DAL.news_category().Update(model);
   
     
   
     

    
       //更新自定义的实体
 
    
      //
    
      返回状态绑定数据
    
      

    
       GridView1.EditIndex 
    
      =
    
       
    
      -
    
      1
    
      ;
 bind();
 }

 
    
      protected
    
       
    
      void
    
       GridView1_RowCancelingEdit(
    
      object
    
       sender, GridViewCancelEditEventArgs e)
 {
 
    
      //
    
      取消状态
    
      

    
       GridView1.EditIndex 
    
      =
    
       
    
      -
    
      1
    
      ;
 bind();
 }

 
    
      protected
    
       
    
      void
    
       GridView1_RowDeleting(
    
      object
    
       sender, GridViewDeleteEventArgs e)
 {//删除状态

 
    
      string
    
       id 
    
      =
    
       GridView1.DataKeys[e.RowIndex].Values[
    
      0
    
      ].ToString();
 
    
      //
    
      取出ID值
    
      

    
       Response.Write(
    
      "
    
      <script language='JavaScript'>return confirm('是否删除') </script>
    
      "
    
      );
 
    
      new
    
       xh.shop.DAL.news_category().Delete(Convert.ToInt32(id));
 Response.Write(
    
      "
    
      <script language='JavaScript'>alert('删除成功')</script>
    
      "
    
      );
 bind();
 }