Subir imagenes

[negrocasa]

Hola. Tengo una rutina que me permite subir imagenes a una página web. pero tengo un problema. Como puedo hacer para limitar el peso de estas imagenes? es decir que si son muy pesadas el sistema las achique o en el peor de los casos avise que es muy pesada al usuario.

Cualquier ayuda es bienvenida.

Gracias.
Cristián

[u_goldman]

Mucho depende del componente que utilices...necesitamos ver el codigo, porque hoy vino el clarividente del ASP!

Salu2,

[negrocasa]

Estimados Adjunto el código (obtenido gentilmente de este mismo foro)

<%
' -- Loader.asp --
' -- version 1.1
' Faisal Khan
' [email protected]
' www.stardeveloper.com
' Class for handling binary uploads

Class Loader
Private dict

Private Sub Class_Initialize
Set dict = Server.CreateObject("Scripting.Dictionary")
End Sub

Private Sub Class_Terminate
If IsObject(intDict) Then
intDict.RemoveAll
Set intDict = Nothing
End If
If IsObject(dict) Then
dict.RemoveAll
Set dict = Nothing
End If
End Sub

Public Property Get Count
Count = dict.Count
End Property

Public Sub Initialize
Dim binData
binData = Request.BinaryRead(Request.TotalBytes)
getData binData
End Sub

Public Function getFileData(name)
If dict.Exists(name) Then
getFileData = dict(name).Item("Value")
Else
getFileData = stringToByte("Not Found")
End If
End Function

Public Function getValue(name)
If dict.Exists(name) Then
getValue = dict(name).Item("Value")
Else
getValue = "Not Found"
End If
End Function

Public Function saveToFile(name, path)
If dict.Exists(name) Then
Dim temp
temp = dict(name).Item("Value")
Dim fso
Set fso = Server.CreateObject("Scripting.FileSystemObject")
Dim file
Set file = fso.CreateTextFile(path)
For tPoint = 1 to LenB(temp)
file.Write Chr(AscB(MidB(temp,tPoint,1)))
Next
file.Close
saveToFile = True
Else
saveToFile = False
End If
End Function

Public Function getFileName(name)
If dict.Exists(name) Then
Dim temp, tempPos
temp = dict(name).Item("FileName")
tempPos = 1 + InStrRev(temp, "\")
getFileName = Mid(temp, tempPos)
Else
getFileName = "Not Found"
End If
End Function

Public Function getFilePath(name)
If dict.Exists(name) Then
Dim temp, tempPos
temp = dict(name).Item("FileName")
tempPos = InStrRev(temp, "\")
getFilePath = Mid(temp, 1, tempPos)
Else
getFilePath = "Not Found"
End If
End Function

Public Function getFilePathComplete(name)
If dict.Exists(name) Then
getFilePathComplete = dict(name).Item("FileName")
Else
getFilePathComplete = "Not Found"
End If
End Function

Public Function getFileSize(name)
If dict.Exists(name) Then
getFileSize = LenB(dict(name).Item("Value"))
Else
getFileSize = "Not Found"
End If
End Function

Public Function getFileSizeTranslated(name)
If dict.Exists(name) Then
temp = 1 + LenB(dict(name).Item("Value"))
If Len(temp) <= 3 Then
getFileSizeTranslated = temp & " bytes"
ElseIf Len(temp) > 6 Then
temp = FormatNumber(((temp / 1024) / 1000), 2)
getFileSizeTranslated = temp & " megabytes"
Else
temp = FormatNumber((temp / 1024), 2)
getFileSizeTranslated = temp & " kilobytes"
End If
Else
getFileSize = "Not Found"
End If
End Function

Public Function getContentType(name)
If dict.Exists(name) Then
getContentType = dict(name).Item("ContentType")
Else
getContentType = "Not Found"
End If
End Function

Private Sub getData(rawData)
Dim separator
separator = MidB(rawData, 1, InstrB(1, rawData, ChrB(13)) - 1)

Dim lenSeparator
lenSeparator = LenB(separator)

Dim currentPos
currentPos = 1
Dim inStrByte
inStrByte = 1
Dim value, mValue
Dim tempValue
tempValue = ""

While inStrByte > 0
inStrByte = InStrB(currentPos, rawData, separator)
mValue = inStrByte - currentPos

If mValue > 1 Then
value = MidB(rawData, currentPos, mValue)

Dim begPos, endPos, midValue, nValue
Dim intDict
Set intDict = Server.CreateObject("Scripting.Dictionary")

begPos = 1 + InStrB(1, value, ChrB(34))
endPos = InStrB(begPos + 1, value, ChrB(34))
nValue = endPos

Dim nameN
nameN = MidB(value, begPos, endPos - begPos)

Dim nameValue
If InStrB(1, value, stringToByte("Content-Type")) > 1 Then

begPos = 1 + InStrB(endPos + 1, value, ChrB(34))
endPos = InStrB(begPos + 1, value, ChrB(34))

midValue = MidB(value, begPos, endPos - begPos)
intDict.Add "FileName", trim(byteToString(midValue))

begPos = 14 + InStrB(endPos + 1, value, stringToByte("Content-Type:"))
endPos = InStrB(begPos, value, ChrB(13))

midValue = MidB(value, begPos, endPos - begPos)
intDict.Add "ContentType", trim(byteToString(midValue))

begPos = endPos + 4
endPos = LenB(value)

nameValue = MidB(value, begPos, endPos - begPos)
Else
nameValue = trim(byteToString(MidB(value, nValue + 2)))
End If

intDict.Add "Value", nameValue
intDict.Add "Name", nameN

dict.Add byteToString(nameN), intDict
End If

currentPos = lenSeparator + inStrByte
Wend
End Sub

End Class

Private Function stringToByte(toConv)
Dim tempChar
For i = 1 to Len(toConv)
tempChar = Mid(toConv, i, 1)
stringToByte = stringToByte & chrB(AscB(tempChar))
Next
End Function

Private Function byteToString(toConv)
For i = 1 to LenB(toConv)
byteToString = byteToString & chr(AscB(MidB(toConv,i,1)))
Next
End Function

%>