<%@ WebHandler Language="C#" Class="CheckPriKey"  %>

using System;
using System.Collections.Generic;
using System.Web;
using System.Data;
using System.IO;
using eMIS.Data;
using System.Text;
using System.Web.SessionState;
using eMIS;


public class CheckPriKey : IHttpHandler, IRequiresSessionState
{

    public void ProcessRequest (HttpContext context)
    {
        string programId = context.Request.QueryString["pid"].ToString();
        string primaryKeyValue = context.Request.QueryString["pkv"].ToString();
        string cellValue = context.Request.QueryString["val"].ToString();
        string cellField = context.Request.QueryString["f"].ToString();
        string t = context.Request.QueryString["t"].ToString();
        string c = context.Request.QueryString["c"].ToString();


        string c0 = DataManager.MD5Hash(programId + cellField + primaryKeyValue + t+"sacdmis");
        if (c0 != c)
        {
            context.Response.Write("验证失败");
            context.Response.End();
        }

        if (DateTime.Now.Ticks / 10000000 - long.Parse(t) > 300)
        {
            context.Response.Write("超时！");
            context.Response.End();
        }


        InstanceManager inst = new InstanceManager(context,programId);

        DataTable table = inst.BusinessDbOperator.ExecuteTable("select " + cellField + "," + inst.Program.PrimaryKey + " from " + inst.Program.EditTableName + " where " + inst.Program.PrimaryKey + "='" + primaryKeyValue + "'");
        if (table.Rows.Count != 0)
        {
            DataRow row = table.Rows[0];
            if (cellValue == "")
                row[cellField] = DBNull.Value;
            else
                row[cellField] = cellValue;
            row.AcceptChanges();
            row.SetModified();
            inst.BusinessDbOperator.Save(table, inst.Program.EditTableName, inst.Program.PrimaryKey);
        }

        context.Response.ContentType = "text/plain";
        context.Response.ContentEncoding = System.Text.Encoding.UTF8;
        context.Response.Write("ok");

    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}