userupdate.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.Data.SqlClient;
public partial class UserUpdate : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Session["uname"] != null)
            {
                this.TextBox1.Text = Session["uname"].ToString();
            }
            else
            {
                Response.Write("<script language='javascript'>alert('没有登录请登录');location.href='UserLogin.aspx'</script>");
            }
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string name = Session["uname"].ToString();
        SqlConnection con = db.ceratcon();
        con.Open();
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = (SqlConnection)con;
        cmd.CommandText = "update   Users set Uname=@Uname ,Upwd=@Upwd,Uemal=@Uemal  where  Uname='" + name + "'";

        cmd.Parameters.Add("@Uname", SqlDbType.VarChar);
        cmd.Parameters.Add("@Upwd", SqlDbType.VarChar);
        cmd.Parameters.Add("@Uemal", SqlDbType.VarChar);


        cmd.Parameters["@Uname"].Value = this.TextBox1.Text;
        cmd.Parameters["@Upwd"].Value = this.TextBox3.Text;
        cmd.Parameters["@Uemal"].Value = this.TextBox2.Text;
        cmd.ExecuteNonQuery();
        con.Close();
        Response.Write("<script language='javascript'>alert('修改成功重新登录');location.href='UserLogin.aspx'</script>");
    }
}