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DataFlex Examples

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(DataFlex) OneDrive -- Download Text File to Memory

Downloads a text file (such as XML, JSON, plain-text, HTML, etc.) into a StringBuilder object.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoHttp
    Variant vSbXml
    Handle hoSbXml
    String sExpectedCharset
    String sUrl
    Boolean iSuccess
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    // (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
    Set ComAuthToken Of hoHttp To "MICROSOFT_GRAPH_ACCESS_TOKEN"

    // Sends the following GET request:
    // GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}:/content

    // Make sure to automatically follow redirects
    Set ComFollowRedirects Of hoHttp To True

    // This example will download /Misc/hamlet.xml
    Get ComSetUrlVar Of hoHttp "item_path" "Misc/hamlet.xml" To iSuccess

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbXml
    If (Not(IsComObjectCreated(hoSbXml))) Begin
        Send CreateComObject of hoSbXml
    End
    Move "utf-8" To sExpectedCharset
    Move "https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content" To sUrl
    Get pvComObject of hoSbXml to vSbXml
    Get ComDownloadSb Of hoHttp sUrl sExpectedCharset vSbXml To iSuccess
    Get ComLastMethodSuccess Of hoHttp To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // If the response status code was not 200, then it failed.
    Get ComLastStatus Of hoHttp To iTemp1
    If (iTemp1 <> 200) Begin
        Get ComLastStatus Of hoHttp To iTemp1
        Showln "Response Status Code = " iTemp1
        Showln "Failed."
        Procedure_Return
    End

    // If we got here, then the file was successfully downloaded.
    Showln "Download from OneDrive successful."
    Showln "The file is contained in sbXml."


End_Procedure

 

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