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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using GROUP.Manage;
public partial class AppFormEdit : System.Web.UI.Page
{
BaseClass BaseClass1 = new BaseClass();
protected void Page_Load(object sender, EventArgs e)
{
if (Session["admin"] == null)
{
Response.Redirect("login.aspx");
}
if (!Page.IsPostBack)
{
bindgrig();
}
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
//删除行处理
string strsql = "delete from 资产 where 请购单编号=" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "";
BaseClass1.execsql(strsql);
bindgrig();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
//改变显示页面
GridView1.PageIndex = e.NewPageIndex;
bindgrig();
}
void bindgrig()
{
string strsql = "select 请购单编号,资产名称,资产类别,是否进口,厂家,型号规格,数量,预算单价,预算总价 from 资产";
DataTable dt = BaseClass1.ReadTable(strsql);
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
Session["admin"] == null
这句本来就是错误的
null的意义是既没有空间也没有地址,不存在任何引用
Session["admin"] 是有空间有地址,所以两者不能匹配
如果要判断Session["admin"]为空的话,就到global里面声明一下Session["admin"].tostring()==""
这样才可以
if(e.RowIndex>=0)
{
int keyID=Convert.toInt32(GridView1.DataKeys[e.RowIndex].Value);
string strsql = string.Format("delete from 资产 where 请购单编号={0}",keyID );
}