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Dynamics 365 Community / Forums / Business Central forum / How to Convert Instrea...
Business Central forum

How to Convert Instream Value to Base64String

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Posted on by Manish Ratan 449

Hi Everyone,

Need to convert  Instream Value to Base64String in AL Code(Extension in Visual Studio Code).

When i write a function for conversion, it takes almost an hour to covert in Base64String.

There is a "TempBlob" Table with function "Base64String" but i am unable to go through it, as it requires a blob field also.

Please Suggest. 

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  • Verified answer
    Community Member Profile Picture
    Community Member on at

    Hi Manish,

    You should use blob data type and a TempBlob if you wanna use its toBase64String function.

    Try this code

        var
        vConvertedContent: text;
        varTempBlob: Record TempBlob Temporary;
        varInStream: InStream;
        varOutStream: OutStream;
    begin
        ......................................
        ......................................
        varTempBlob.Init();
        varTempBlob.insert();
        varTempBlob.Blob.CreateOutStream(varOutStream, TextEncoding::UTF8);
        CopyStream(varOutStream, varInStream);
        vConvertedContent := varTempBlob.ToBase64String();


    First of all, you should fill your blob field (field of TempBlob) by your Instream in order to use the ToBase64String function. To do this, you should pass by an Outstream that's why we copy the InStream to OutStream via the CopyStream function.

    The function toBase64String here converts the blob field (which is your InStream) to base64 and returns the result as text (vConvertedContent).

    Don't hesitate if If you need more details or explanations.

    -------------

    Please verify my answer if you find my answer helpful. Doing so you'll show other community members that there was found a solution and you credit my help.

    -------------

    Best Regards,

  • Manish Ratan Profile Picture
    Manish Ratan 449 on at

    G8 :) ... it worked.

    Thanks!!!

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