Admin/addUserInfo.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 Admin_addUserInfo : System.Web.UI.Page
{
    SqlHelper insert = new SqlHelper();
    Alert js = new Alert();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

        }
    }   
    protected void Button1_Click(object sender, EventArgs e)
    {
        string strsql = "select * from UserInfo where UserNumber='" + UserName.Text + "'";
        DataSet ds = insert.GetDs(strsql, "ds");
        if (ds.Tables[0].Rows.Count > 0) 
        {
            js.Alertjs("账号已经存在不能重复添加");
            return;
        }

        insert.RunSql("insert into UserInfo(UserName,UserNumber)values('" + UserName.Text + "','" + UserNumber.Text + "') ");
        Alert.AlertAndRedirect("添加成功", "addUserInfo.aspx");

    }

}