teachersoperator.cs

学生信息管理系统

using System;
using System.Data;
using System.Configuration;
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;

/// <summary>
/// Teachers 的摘要说明
/// </summary>
public class TeachersOperator
{
	public TeachersOperator()
	{
		//
		// TODO: 在此处添加构造函数逻辑
		//
	}

    //验证用户名和密码是否一致
    public static bool FindTeacher(string TeacherNum, string TeacherPwd)
    {
        SqlConnection con = DB.CreateCon();
        con.Open();
        SqlCommand cmd = new SqlCommand("select count(*) from TeachersLogin where TeacherNum='" + TeacherNum + "'" + " and TeacherPwd='" + TeacherPwd + "'", con);
        int count = Convert.ToInt32(cmd.ExecuteScalar());
        con.Close();
        if (count > 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    //验证用户名是否已经存在
    public static bool FindTeacher(string TeacherNum)
    {
        SqlConnection con = DB.CreateCon();
        con.Open();
        SqlCommand cmd = new SqlCommand("select count(*) from TeachersLogin where TeacherNum='" + TeacherNum + "'", con);
        int count = Convert.ToInt32(cmd.ExecuteScalar());
        con.Close();
        if (count > 0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}