Complete el código:

If label. = "Usuario or label.text = "Cajero"
Form1.show
text_bd.enable true
me.close
Else
("Error, no existe el usuario"

Endif

Complete la siguiente conexión a base de datos:

Public Sub ConnectToSql()
conn As New SqlClient.SqlConnection
' TODO: Modify the connection string and include any
' additional required properties for your database.
conn.ConnectionString = & _
"integrated security=SSPI;=SQL Server Name;" & _
"persist security info=False;initial =northwind"
Try
conn.Open()
' Insert code to process data.
Catch ex As
MessageBox.Show("Failed to connect to data source")
Finally
conn.Close()
End Try

// C#
public void ConnectToSql ()
{
System.Data.SqlClient.SqlConnection conn =
new System.Data.SqlClient.SqlConnection ();
// TODO: Modify the connection string and include any
// additional required properties for your database.
conn.ConnectionString =
"integrated security=SSPI;data source=SQL Server Name;" +
"persist security info=False;initial catalog=northwind";
try
{
conn.Open();
// Insert code to process data.
}
catch (Exception ex)
{
MessageBox.Show("Failed to connect to data source");
}
finally
{
conn.Close();
}
}

PROCEDURE [Buscar_Solicitud]
@IdUsuario int,
@IdSol int
AS

IF isnull((Select Tipo
Solicitudes
Where IdUsuario = And IdSolicitud = @IdSol), '1') = '1'
BEGIN
-- Aqui ejecutan lo que corresponda a este caso
END
ELSE

-- Aqui ejecutan lo que corresponda a este caso
END

Completa el siguiente código:

If TextBox1.Text = "" TextBox2.Text = "" Then
MsgBox "Los campos se encuentran vacios"
Else
If TextBox1.Text = "" Then
"El campo USUARIO se encuentra vacio"
Else
If TextBox2.Text = ""
MsgBox "El campo CONTRASEÑA se encuentra vacio"

If TextBox1.Text = "TuUsuario" And TextBox2.Text = "TuContraseña" Then
Me.Hide()
form2.show()
Else
MsgBox "Los datos son incorrectos"
End If

End If