wangJMM.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

public partial class wangJMM : System.Web.UI.Page
{ 
    DataCode dataconn = new DataCode();
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        SqlConnection con = dataconn.getcon();
        con.Open();
        SqlCommand com = new SqlCommand("select count(*) from tb_Student where ID='" + txtStudId.Text + "'", con);
        int count = Convert.ToInt32(com.ExecuteScalar());
        if (count > 0)
        {
            Session["ID"] = txtStudId.Text;
            Page.Response.Redirect("zhaohuimmxwt.aspx");
        }
        else
        {
            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('无此学生编号、或输入有误！');</script>");
            return;
        }
        con.Close();
    }
}