App_Code/Class1.cs

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using System;
using System.Data;
//using System.Data.OleDb;
using System.Data.SqlClient;
using System.Configuration;
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;

/// <summary>
/// Class1 的摘要说明
/// </summary>
public class Class1
{
    public static string repString(string strTemp)
    {
        if (strTemp == null)
            strTemp = "";
        strTemp = strTemp.Replace("'", "").Replace(" ", "").Replace("?", "").Replace("*", "").Replace("=", "").Trim();
        return strTemp;
    } 
    //SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings["testConnectionString"]);
    public Class1()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    // public static string connstring = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + System.Web.HttpContext.Current.Server.MapPath("~/App_Data/web.mdb");

    public static string connstring = ConfigurationManager.AppSettings["cn"];
    public static DataSet GDS(string sql)
    {
        //OleDbDataAdapter dap = new OleDbDataAdapter(sql, connstring);
        SqlDataAdapter dap = new SqlDataAdapter(sql, connstring);
        DataSet ds = new DataSet();
        dap.Fill(ds);
        return ds;
    }
    public static void Dsql(string sql)
    {
        //  OleDbConnection conn = new OleDbConnection();
        SqlConnection conn = new SqlConnection();
        conn.ConnectionString = connstring;
        conn.Open();
        //  OleDbCommand cmd = new OleDbCommand(sql, conn);
        SqlCommand cmd = new SqlCommand(sql, conn);
        cmd.ExecuteNonQuery();
        conn.Close();
    }
    public int hsgexucute(string sql)
    {
        //myConnection.Open();


        SqlConnection conn = new SqlConnection();
        conn.ConnectionString = connstring;