studentManager/student_man.aspx.cs

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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 System.Text.RegularExpressions;
using System.Data.SqlClient;
using Mysqlserver;


public partial class student_man : System.Web.UI.Page
{
  
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

            ddl_Binding();

            //txt_sound_id.Text = getliushuiNum();
            //if (Session["user_right"].ToString() == "管理员")
            //{

            //    dg_approval.Columns[5].Visible = true;
            //}
            //else
            //{

            //    dg_approval.Columns[3].Visible = false;
            //    ;
            //}
        }
      
     }


    protected void ddl_Binding()
    {
        SqlServerDataBase db = new SqlServerDataBase();
        SqlConnection conn = db.DBconn();
        string sql = "select a.*,b.className from student_inf a,Class b where a.classID=b.classID";
        DataSet ds = db.Select(sql, conn);

        if (ds.Tables[0].Rows.Count > 0)
        {
            dg_approval.DataKeyField = "studentID";
            dg_approval.DataSource = ds;
            dg_approval.DataBind();
        }
        sql = "select * from Class";
        ds = db.Select(sql, conn);
        if (ds.Tables[0].Rows.Count > 0)
        {
            TextBox6.DataTextField = "className";