RecorteX

descargar
 
        Dim diskClass As New System.Management.ManagementClass("Win32_LogicalDisk")
        Dim disks As System.Management.ManagementObjectCollection = diskClass.GetInstances()
        Dim disk As System.Management.ManagementObject
        Dim space As System.UInt64 = 0
        For Each disk In disks
            If disk("Description").ToString = "Local Fixed Disk" Then
                If disk("Description").ToString = "Local Fixed Disk" Then
                space += CType(disk("FreeSpace"), System.UInt64)
            End If
        Next disk
 

Ejecutar shell y capturar la salida

descargar
 
        Dim p As New Process
        p.StartInfo.UseShellExecute = False
        p.StartInfo.RedirectStandardOutput = True
        p.StartInfo.Arguments = "x.txt y.txt"
        p.StartInfo.WorkingDirectory = "E:\winnt\system32"
        p.StartInfo.FileName = "xcopy "
        p.Start()
        Dim sr As IO.StreamReader = p.StandardOutput
        Dim sb As New System.Text.StringBuilder("")
        Dim sinput As String = ""
        Do Until sinput = "-1"
            sb.Append(sr.ReadLine() & ControlChars.CrLf)
            sinput = sr.Read
        Loop
        Return sb.ToString
 

Este ejemplo usa el app.config

descargar
 
        Dim aConfig As Configuration.ConfigurationSettings
        Try
            Dim MailFrom As New MailAddress(aConfig.AppSettings("EmailFrom"))
            Dim MailTo As New MailAddress(aConfig.AppSettings("EmailTo"))
 
            Dim mailMsg As MailMessage = New MailMessage(MailFrom, MailTo)
 
            mailMsg.IsBodyHtml = True
            mailMsg.Priority = MailPriority.Normal
 
            mailMsg.Subject = "Subject for the mail"
            mailMsg.Body = ReadStringResource("Mail.htm")
 
            Dim SmtpMail As New Net.Mail.SmtpClient
            Dim theCredential As New Net.NetworkCredential("usuario", "contraseña")
            SmtpMail.Credentials = theCredential
            SmtpMail.Host = aConfig.AppSettings("EmailServer")
            SmtpMail.Send(mailMsg)
 
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
 

SQL Query Analyzer tiene la posibilidad de ejecutar stored procedures con teclas rápida Ctrl + n (donde n es un número)

Esto se hace en Tools -> Customize

Entonces si agrego en Ctrl+4 por ejemplo el texto sp_select, al presionar ctrl+4 lo va a ejecutar

Si ejecutan el siguiente script en la base master, cada vez que seleccionen un texto (tanto en la parte de instrucciones t-sql) como en el área de resultados, aparecerá un select con el contenido de la tabla

descargar
 
CREATE procedure sp_select (@tabla AS varchar(200) )
AS
declare @a AS varchar(300)
SET @a = 'select * from ' + @tabla
exec (@a)
go
 

Espero que les sea de utilidad

Con este código, para la transformación solo necesitamos llamarla mandándole un string con el contenido, otro string con el contenido del xsl y “Me.GetType().Assembly.Evidence” y regresará un string con el contenido de la transformación.

descargar
 
    Public Function ApplyXMLTransform(ByVal xslSDoc As String, ByVal xmlSDoc As String, ByVal evidence As System.Security.Policy.Evidence) As string
        Dim xmlDoc As XmlTextReader = New XmlTextReader(New StringReader(xmlSDoc))
        Dim xslDoc As XmlTextReader = New XmlTextReader(New StringReader(xslSDoc))
        Dim res As New Xml.XmlDocument
        Dim xslt As New Xml.Xsl.XslTransform
        xslt.Load(xslDoc, Nothing, evidence)
        res.Load(xslt.Transform(New Xml.XPath.XPathDocument(xmlDoc), Nothing, New Xml.XmlUrlResolver))
        Return res.OuterText
    End Function
 

A veces nos topamos con la necesidad de que solo se pueda ejecutar una instancia de nuestro sistema, con esta función lo evitamos.

descargar
 
Function PrevInstance() As Boolean
   If UBound(System.Diagnostics.Process.GetProcessesByName(System.Diagnostics.Process.GetCurrentProcess.ProcessName)) > 0 Then
      Return True
   Else
      Return False
   End If
End Function
 

Se usa así

descargar
 
   if PrevExistance() = True Then Application.Exit()
 

nota los valores booleanos están implícitamente mostrados para facilidad de comprensión.

Buscar si una tabla tiene campo identity, y saber cual es

descargar
 
dim @tabla  AS varchar(20)
SELECT @tabla='tablaabuscar'
SELECT o.name , c.name 
FROM syscolumns c, sysobjects o
WHERE c.STATUS & 128 = 128
AND o.id = c.id
AND o.name=@tabla
ORDER BY o.name
 

descargar
 
      Private Function paco(ByVal xmlFile As String, ByVal xslFile As String) As String
        Dim archivo As String = "c:\temp.tmp"
        Dim temp As New Xml.XmlDocument
        Dim resolver As XmlUrlResolver = New XmlUrlResolver
        resolver.Credentials = System.Net.CredentialCache.DefaultCredentials
        Dim XSLT As Xsl.XslTransform = New Xsl.XslTransform
        XSLT.Load(xslFile, resolver)
        XSLT.Transform(archivo, archivo, resolver)
        Return ReadFile(archivo)
    End Function
 

Estructura basica de una clase

descargar
 
''' -----------------------------------------------------------------------------
''' <summary>
''' Comentarios
''' </summary>
''' -----------------------------------------------------------------------------
Public Class NombreClase
#Region "Atributos"
    Private _ChangedItem As System.Windows.Forms.GridItem
    Private _OldValue As Object
#End Region
#Region "Propiedades"
 
    Public Property ChangedItem() As System.Windows.Forms.GridItem
        Get
            Return _ChangedItem
        End Get
        Set(ByVal Value As System.Windows.Forms.GridItem)
            _ChangedItem = Value
        End Set
    End Property
 
    Public Property OldValue() As Object
        Get
            Return _OldValue
        End Get
        Set(ByVal Value As Object)
            _OldValue = Value
        End Set
    End Property
 
#End Region
 
#Region "Constructor"
    Public Sub New()
    End Sub
#End Region
#Region "Metodos"
#End Region
End Class
 

descargar
 
  Dim reader As New System.Xml.XmlTextReader(New System.IO.StringReader("<xmlaleer att1=""/>"))