6

I need to convert an image inside Excel (or through VBA) to base64 (in the end I will make XML output).

How can I do this? Do I need to make a reference to DOM?

I´ve been reading this question but it only works for text strings not images...

Does anyone have any code that I can see?

3
  • 2
    how do you get that image? Clipboard, file system? Commented Jan 11, 2010 at 17:09
  • Where is your image? Is it a separate file, or is it embedded in your Excel sheet? Commented Jan 11, 2010 at 17:13
  • The image is in my file system (HD). Commented Jan 11, 2010 at 17:15

1 Answer 1

13

Heres a function. Can't remember where I got it from.

Public Function EncodeFile(strPicPath As String) As String
    Const adTypeBinary = 1          ' Binary file is encoded

    ' Variables for encoding
    Dim objXML
    Dim objDocElem

    ' Variable for reading binary picture
    Dim objStream

    ' Open data stream from picture
    Set objStream = CreateObject("ADODB.Stream")
    objStream.Type = adTypeBinary
    objStream.Open
    objStream.LoadFromFile (strPicPath)

    ' Create XML Document object and root node
    ' that will contain the data
    Set objXML = CreateObject("MSXml2.DOMDocument")
    Set objDocElem = objXML.createElement("Base64Data")
    objDocElem.dataType = "bin.base64"

    ' Set binary value
    objDocElem.nodeTypedValue = objStream.Read()

    ' Get base64 value
    EncodeFile = objDocElem.Text

    ' Clean all
    Set objXML = Nothing
    Set objDocElem = Nothing
    Set objStream = Nothing

End Function
Sign up to request clarification or add additional context in comments.

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.