admin/AddManager.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 systemManage_AddManager : System.Web.UI.Page
{

    protected string sqlConString = ConfigurationManager.ConnectionStrings["LibraryConnectionString"].ToString();
    protected SqlConnection sqlCon;
    /// <summary>
    /// 检测用户是不是已经注册
    /// </summary>
    /// <returns></returns>
    protected bool CheckUser()
    {
        sqlCon = new SqlConnection(sqlConString);
        string strCmd = "select * from tb_admin where username = '" + txtUserName.Text.Trim() + "'";
        sqlCon.Open();
        SqlCommand sqlCmd = new SqlCommand(strCmd, sqlCon);
        SqlDataReader sqlDa = sqlCmd.ExecuteReader();

        if (sqlDa.Read())
        {
            if (txtUserName.Text.Trim() != sqlDa["username"].ToString())
            {
                return true;
            }
            else
            {
                return false;
            }

        }
        else
        {
            sqlCon.Close();
            return true ;
        }

        
    }


    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnCancel_Click(object sender, ImageClickEventArgs e)
    {

    }