Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 8 views

    Conexion 2

    Uploaded by

    Samuel
    This document contains code for a C# application that manages a SQL database. It defines a Connection class with methods to connect to the database, execute queries, and insert, update, delete records. It also contains code for a Form that uses the Connection class methods to display, add, edit and remove contact records from a DataGridView control on the form. The form loads data on opening and has buttons to perform CRUD operations that call the Connection class methods.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd

    Conexion 2

    Uploaded by

    Samuel
    8 views4 pages
    This document contains code for a C# application that manages a SQL database. It defines a Connection class with methods to connect to the database, execute queries, and insert, update, delete records. It also contains code for a Form that uses the Connection class methods to display, add, edit and remove contact records from a DataGridView control on the form. The form loads data on opening and has buttons to perform CRUD operations that call the Connection class methods.

    Original Description:

    Original Title

    Conexion-2

    Copyright

    © © All Rights Reserved

    Available Formats

    TXT, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    This document contains code for a C# application that manages a SQL database. It defines a Connection class with methods to connect to the database, execute queries, and insert, update, delete records. It also contains code for a Form that uses the Connection class methods to display, add, edit and remove contact records from a DataGridView control on the form. The form loads data on opening and has buttons to perform CRUD operations that call the Connection class methods.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    8 views4 pages

    Conexion 2

    Uploaded by

    Samuel
    This document contains code for a C# application that manages a SQL database. It defines a Connection class with methods to connect to the database, execute queries, and insert, update, delete records. It also contains code for a Form that uses the Connection class methods to display, add, edit and remove contact records from a DataGridView control on the form. The form loads data on opening and has buttons to perform CRUD operations that call the Connection class methods.

    Copyright:

    © All Rights Reserved
    Download as TXT, PDF, TXT or read online from Scribd
    Download as txt, pdf, or txt
    of 4

    using System;

    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Data.SqlClient; //Agregar libreria
    using System.Data;//Agregar libreria
    using System.Windows.Forms;//Agregar libreria

    namespace AplicacionAgenda
    {
    class conexion
    {
    SqlConnection cn = new SqlConnection("Data Source=VOSTRO;Initial
    Catalog=DatosPers;Integrated Security=True"); //Cadena de conexion
    //Llamar metdos del DataSet
    private SqlCommandBuilder cmb;
    public DataSet ds = new DataSet();
    public SqlDataAdapter da;
    public SqlCommand comando;

    //agregar todo el metodo


    public void Conectar()
    {
    try
    {
    cn.Open();
    MessageBox.Show("Se conecto correctamente a la base", ".::|SIS|
    Informacion");
    }
    catch (Exception)
    {
    MessageBox.Show("Error al conectar", ".::|SIS|Informacion");

    }
    finally
    {
    cn.Close();
    }
    }
    public void consulta(string sql, string tabla)
    {
    ds.Tables.Clear();
    da = new SqlDataAdapter(sql, cn);
    cmb = new SqlCommandBuilder(da);
    da.Fill(ds, tabla);
    }
    public bool insertar(string sql)
    {
    cn.Open();
    comando = new SqlCommand(sql, cn);
    int i = comando.ExecuteNonQuery();
    cn.Close();
    if (i>0)
    {
    return true;
    }
    else
    {
    return false;
    }
    }
    public bool eliminar(string tabla, string condicion)
    {
    cn.Open();
    string elimina = "Delete from " + tabla + " where " + condicion;
    comando = new SqlCommand(elimina, cn);
    int i = comando.ExecuteNonQuery();
    cn.Close();
    if(i>0)
    {
    return true;
    }
    else
    {
    return false;
    }
    }
    public bool actualizar(string tabla, string campos, string condicion)
    {
    cn.Open();
    string actualiza = "update " + tabla + " set " + campos + " where " +
    condicion;
    comando = new SqlCommand(actualiza, cn);
    int i = comando.ExecuteNonQuery();
    cn.Close();
    if(i>0)
    {
    return true;
    }
    else
    {
    return false;
    }
    }

    }
    }
    -----------------------------------------------
    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;

    namespace AplicacionAgenda
    {
    public partial class frmAgenda : Form
    {
    public frmAgenda()
    {
    InitializeComponent();
    }
    conexion cn = new conexion(); //creamos la instancia o el llamdo
    private void frmAgenda_Load(object sender, EventArgs e)
    {
    cn.Conectar(); // llamos al metodo
    MostrarDatos();
    }
    public void MostrarDatos()
    {
    cn.consulta("Select Codigo, Nombre, ApellidoP as 'Apellido Paterno',
    ApellidoM as 'Apellido Materno', Edad, Sexo from datos order by Codigo desc",
    "Datos");
    dataGridView.DataSource = cn.ds.Tables["Datos"];
    }

    private void btnAgregar_Click(object sender, EventArgs e)


    {
    string Agregar = "Insert into datos values ('" + txtCodigo.Text + "','"
    + txtNombre.Text + "','" + txtApellidoP.Text + "','" + txtApellidoM.Text + "','" +
    txtEdad.Text + "','" + cboSexo.Text + "')";

    if (cn.insertar(Agregar))
    {
    MessageBox.Show("Los datos se agregarón correctamente");
    txtCodigo.Clear();
    txtNombre.Clear();
    txtApellidoP.Clear();
    txtApellidoM.Clear();
    txtEdad.Clear();
    cboSexo.SelectedIndex = -1;
    MostrarDatos();
    }
    else
    MessageBox.Show("No se agregaron los datos");
    }

    private void btnEliminar_Click(object sender, EventArgs e)


    {
    if (cn.eliminar("Datos", "Codigo = '" + txtCodigo.Text + "'"))
    {
    MessageBox.Show("Los datos fueron eliminados correctamente", ".::|
    SIS| Información");
    txtCodigo.Clear();
    txtNombre.Clear();
    txtApellidoP.Clear();
    txtApellidoM.Clear();
    txtEdad.Clear();
    //cboSexo.SelectedIndex = -1;
    cboSexo.ResetText();
    MostrarDatos();
    }
    else
    {
    MessageBox.Show("error al eliminar", ".::|SIS| Información");
    }
    }

    private void dataGridView_CellClick(object sender,


    DataGridViewCellEventArgs e)
    {
    DataGridViewRow dgv = dataGridView.Rows[e.RowIndex];
    txtCodigo.Text = dgv.Cells[0].Value.ToString();
    txtNombre.Text = dgv.Cells[1].Value.ToString();
    txtApellidoP.Text = dgv.Cells[2].Value.ToString();
    txtApellidoM.Text = dgv.Cells[3].Value.ToString();
    txtEdad.Text = dgv.Cells[4].Value.ToString();
    cboSexo.Text = dgv.Cells[5].Value.ToString();

    private void btnActualizar_Click(object sender, EventArgs e)


    {
    string actualizar = "Nombre = '" + txtNombre.Text + "', ApellidoP = '"
    + txtApellidoP.Text + "', ApellidoM = '" + txtApellidoM.Text + "', Edad = '" +
    txtEdad.Text + "', Sexo = '" + cboSexo.Text + "'";

    if(cn.actualizar(" Datos",actualizar, " Codigo = '" + txtCodigo.Text +


    "'"))
    {
    MessageBox.Show("Los datos fueron Actualizados correctamente",
    ".::|SIS| Información");
    txtCodigo.Clear();
    txtNombre.Clear();
    txtApellidoP.Clear();
    txtApellidoM.Clear();
    txtEdad.Clear();
    //cboSexo.SelectedIndex = -1;
    cboSexo.ResetText();
    MostrarDatos();
    }
    else
    {
    MessageBox.Show("error al actualizar", ".::|SIS| Información");
    }
    }
    }
    }

    You might also like