密码修改.aspx.cs

学生管理系统 功能不是很强大 但是很实用

using System;
using System.Data;
using System.Data.SqlClient;
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 密码修改 : System.Web.UI.Page
{
    string strname;
    protected void Button1_Click(object sender, EventArgs e)
    {
        strname = Convert.ToString(this.Session["name"]);
        if (TextBox2.Text != TextBox3.Text)
            Response.Write("<script>alert('新密码输入不一致！');</script>");
        if (TextBox1.Text!="")
        {
        string strcnn = "server=.;database=学生成绩智能管理系统;user id=sa;password=sa;";
        string str = TextBox1.Text;
        string strda = "SELECT COUNT(*)  FROM 教师表 WHERE 教师编号 ='" + strname + " 'AND 密码 = " + str; 
        string strda1 = "SELECT *  FROM 教师表 WHERE 教师编号 = 001 AND 密码 = " + str;
        SqlConnection cnn = new SqlConnection(strcnn);
        cnn.Open();
        SqlCommand cmd = new SqlCommand(strda, cnn);
        SqlDataAdapter da = new SqlDataAdapter(strda1, cnn);
        DataSet ds = new DataSet();
        da.Fill(ds,"教师表");
        DataTable table = ds.Tables[0];
        DataRow row = table.Rows[0];
        int num = (int)cmd.ExecuteScalar();
        if (num==1&&TextBox2.Text == TextBox3.Text)
        {
            row["密码"] = TextBox2.Text;
            Response.Write("<script>alert('修改成功！');</script>");
        }
        cnn.Close();
        SqlCommandBuilder  scb = new SqlCommandBuilder(da);
        da.Update(ds.Tables["教师表"]);
        }
        else 
              Response.Write("<script>alert('请输入密码！');</script>");
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        TextBox1.Text="";
        TextBox1.Text="";
        TextBox1.Text="";
    }
}