我有这个错误,我一直在看谷歌和在这里的另一个问题,我无法找到我的问题的答案,这是我的代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Net.Http;
using System.Web.Http;
using MySql.Data.MySqlClient;
namespace WebService1
{
/// <summary>
/// Descripción breve de Service1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// Para permitir que se llame a este servicio web desde un script, usando ASP.NET AJAX, quite la marca de comentario de la línea siguiente.
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hola a todos";
}
[WebMethod]
public string ConectarBaseDatos()
{
try
{
using (MySqlCommand cm = new MySqlCommand())
{
string connection = @"Data Source=localhost:3306; Database=sistemadatosatletasfecovol;
User ID=movil; Password=***";
MySqlConnection cn = new MySqlConnection(connection);
cm.CommandType = System.Data.CommandType.StoredProcedure;
cm.CommandText = "ingresarUsuario";
cm.Parameters.Add("_email", MySqlDbType.VarChar).Value = "asdasd@gmail.com";
cm.Parameters.Add("_password", MySqlDbType.VarChar).Value = "******";
cm.Connection = cn;
cm.ExecuteNonQuery();
MySqlDataReader cr = cm.ExecuteReader();
cr.Read();
string id;
id = cr["idUsuario"].ToString();
return id;
}
}
catch (Exception ex)
{
return ex.ToString();
}
}
}
}
网页上的方法“ConectarBaseDatos”,当我执行cm.ExecuteNonQuery()
时会出现问题;
答案 0 :(得分:1)
您必须在使用此代码
调用ExecuteNonQuery之前打开连接 cn.Open();
然后,确保在using块的末尾用此代码关闭连接:
cn.Close();