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();
}

 

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