Ingeniero En Sistemas

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
usingSystem.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;


namespace PruebaFormulario5
{
publicpartial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection cn;
SqlCommand cm;SqlDataReader dr;

cn = new SqlConnection(@"Data Source=SERVIDOR\Sqlexpress;Initial Catalog=InfoEstudiantes;Integrated Security=True");
cn.Open();

cm = newSqlCommand("Select * from Usuarios", cn);
dr = cm.ExecuteReader();

while (dr.Read())
{
this.ListBox1.Items.Add(dr[0].ToString());

}dr.Close();
cn.Close();



}

protected void Button1_Click(object sender, EventArgs e)
{this.TextBox1.Text="Hola";
}
}
}

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;

namespaceWebApplication_Login
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}

protected voidBtnAceptar_Click(object sender, EventArgs e)
{
SqlConnection cn = new SqlConnection(@"Data Source=SERVIDOR\Sqlexpress;Initial Catalog=InfoEstudiantes;Integrated Security=True");...