userInfo.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Text;
using System.Data;

public partial class userInfo : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack && Session["lname"] != null)
        {
            ShowInfo();
        }
    }
    protected void ShowInfo()
    {
        string sql = "select * from members where lname='" + Session["lname"].ToString() + "'";

        DataSet ds = DbHelperSQL.Query(sql);
        if (ds.Tables[0].Rows.Count > 0)
        {
            txt_lname.Text = ds.Tables[0].Rows[0]["lname"].ToString();
            txt_mname.Text = ds.Tables[0].Rows[0]["mname"].ToString();
            rtsex.SelectedValue = ds.Tables[0].Rows[0]["sex"].ToString();
            txt_tel.Text = ds.Tables[0].Rows[0]["tel"].ToString();
            txt_address.Text = ds.Tables[0].Rows[0]["address"].ToString();
            txt_postno.Text = ds.Tables[0].Rows[0]["postno"].ToString();
        }
    }

    protected void btnSave_Click(object sender, EventArgs e)
    { 
        StringBuilder strSql = new StringBuilder();
        strSql.Append("update members set ");
        strSql.Append("mname = @mname,");
        strSql.Append("sex = @sex,");
        strSql.Append("tel = @tel,");
        strSql.Append("address = @address,");
        strSql.Append("postno = @postno");
        strSql.Append("  where lname=@lname");
        SqlParameter[] parameters = new SqlParameter[] {
                    new SqlParameter("@lname", SqlDbType.VarChar,50),
                    new SqlParameter("@mname", SqlDbType.VarChar,50),
                    new SqlParameter("@sex", SqlDbType.VarChar,10),
                    new SqlParameter("@tel", SqlDbType.VarChar,50),
                    new SqlParameter("@address", SqlDbType.VarChar,100),
                    new SqlParameter("@postno", SqlDbType.VarChar,50)  };
        parameters[0].Value = txt_lname.Text;
        parameters[1].Value = txt_mname.Text;
        parameters[2].Value = rtsex.SelectedValue;
        parameters[3].Value = txt_tel.Text;
        parameters[4].Value = txt_address.Text;
        parameters[5].Value = txt_postno.Text;
        DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
        MessageBox.Show(this, "保存成功！");