left2.ascx.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;

public partial class left2 : System.Web.UI.UserControl
{
    public string gg;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Session["nuser"] == null)
            {
                login2.Visible = false;
                login1.Visible = true;
            }
            else
            {
                login2.Visible = true;
                login1.Visible = false;
            }


         string    sql = "select content from dx where leibie='本站公告'";
            DataSet result = new DataSet();
            result = new Class1().hsggetdata(sql);
            if (result != null)
            {
                if (result.Tables[0].Rows.Count > 0)
                {
                    gg = result.Tables[0].Rows[0][0].ToString();
                }
            }
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("search.aspx?key="+TextBox1.Text);
    }
    protected void Calendar1_SelectionChanged(object sender, EventArgs e)
    {
        Response.Redirect("xlList.aspx?addtime=" + Calendar1.SelectedDate.ToShortDateString());
    }
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        Response.Redirect("Addtz.aspx");
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        string sql;
        if (DropDownList1.SelectedItem.Text == "教师")
        {
            sql = "select * from T_info where num='" + TextBox2.Text.ToString().Trim() + "' and pwd='" + TextBox3.Text.ToString().Trim() + "' ";