ICssSavingCallback Interface

public interface ICssSavingCallback

Public Interface ICssSavingCallback

public interface class ICssSavingCallback

type ICssSavingCallback =  interface end

public void CssSavingCallback()
{
    // Open a document to be converted to html
    Document doc = new Document(MyDir + "Rendering.docx");

    // If our output document will produce a CSS stylesheet, we can use an HtmlSaveOptions to control where it is saved
    HtmlSaveOptions options = new HtmlSaveOptions();

    // By default, a CSS stylesheet is stored inside its HTML document, but we can have it saved to a separate file
    options.CssStyleSheetType = CssStyleSheetType.External;

    // We can designate a filename for our stylesheet like this
    options.CssStyleSheetFileName = ArtifactsDir + "SavingCallback.CssSavingCallback.css";

    // A custom ICssSavingCallback implementation can also control where that stylesheet will be saved and linked to by the Html document
    // This callback will override the filename we specified above in options.CssStyleSheetFileName,
    // but will give us more control over the saving process
    options.CssSavingCallback =
        new CustomCssSavingCallback(ArtifactsDir + "SavingCallback.CssSavingCallback.css", true, false);

    // The CssSaving() method of our callback will be called at this stage
    doc.Save(ArtifactsDir + "SavingCallback.CssSavingCallback.html", options);
}

/// <summary>
/// Designates a filename and other parameters for the saving of a CSS stylesheet
/// </summary>
private class CustomCssSavingCallback : ICssSavingCallback
{
    public CustomCssSavingCallback(string cssDocFilename, bool isExportNeeded, bool keepCssStreamOpen)
    {
        mCssTextFileName = cssDocFilename;
        mIsExportNeeded = isExportNeeded;
        mKeepCssStreamOpen = keepCssStreamOpen;
    }

    public void CssSaving(CssSavingArgs args)
    {
        // Set up the stream that will create the CSS document         
        args.CssStream = new FileStream(mCssTextFileName, FileMode.Create);
        Assert.True(args.CssStream.CanWrite);
        args.IsExportNeeded = mIsExportNeeded;
        args.KeepCssStreamOpen = mKeepCssStreamOpen;

        // We can also access the original document here like this
        Assert.True(args.Document.OriginalFileName.EndsWith("Rendering.docx"));
    }

    private readonly string mCssTextFileName;
    private readonly bool mIsExportNeeded;
    private readonly bool mKeepCssStreamOpen;
}