Скачать или смотреть How to Get the Table Height of a DocumentRenderer FormattedDocument in Migradoc

Learn how to determine the table height in a PDFSharp document created using Migradoc, allowing for seamless PDF creation and layout adjustments in C-.
---
This video is based on the question https://stackoverflow.com/q/68806225/ asked by the user 'Romias' ( https://stackoverflow.com/u/7720/ ) and on the answer https://stackoverflow.com/a/68809211/ provided by the user 'Romias' ( https://stackoverflow.com/u/7720/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Get table height of DocumentRenderer FormatedDocument in Migradoc

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding Table Height in Migradoc PDF Generation

When working with PDF generation in C- using Migradoc and PDFSharp, one common challenge developers face is obtaining the height of a dynamically generated table. This height is crucial for ensuring that content following the table is positioned correctly in the final PDF document. Let’s dive into a practical solution for this problem.

The Problem at Hand

You might be creating a PDF document with an embedded table where the number of rows varies significantly. This variability means that calculating the table's height beforehand can be tricky. Without this measurement, you could end up with overlapping text or misaligned sections in the PDF.

Here’s a code snippet that outlines the basic setup:

[[See Video to Reveal this Text or Code Snippet]]

While the code prepares and renders the table, you might find yourself in need of the actual height of this rendered table in the FormatedDocument. Let’s explore how you can extract this information effectively.

The Solution: Accessing RenderInfo

After you've prepared your document using docRenderer.PrepareDocument(), you can access the RenderInfo array. This array contains layout details about the objects rendered on the page, including the table you are working with. Here’s how you can do it:

Step-by-Step Breakdown

Prepare the Document: As you already have in your code, you need to call PrepareDocument() to set up everything for rendering.

[[See Video to Reveal this Text or Code Snippet]]

Access RenderInfo: Retrieve the RenderInfo for the first page (assuming you only have one page) like this:

[[See Video to Reveal this Text or Code Snippet]]

Calculate the Table Height: The height of the last rendered object corresponds to the table's height. Extract it with:

[[See Video to Reveal this Text or Code Snippet]]

Important Considerations

Table vs. Page Heights: If you're rendering directly to a PDFSharp document as indicated, then the ContentArea height will represent the table's full height. However, if there are margins on the page, you might need to account for these by adding the top and bottom margins to your calculations when working with a standard page layout.

One Page Assumption: This solution is tailored for scenarios where you are working with a single-page document. If your application generates multi-page documents, additional logic might be needed to handle the page transitions.

Conclusion

Obtaining the height of a dynamically generated table in Migradoc when creating a PDF can be achieved efficiently by utilizing the RenderInfo array. By following the steps outlined above, developers can successfully control the layout and appearance of their PDF documents while ensuring that all sections appear in the intended order. This small but significant adjustment can lead to substantial improvements in document presentation and usability.

Now you can confidently proceed with your PDF layout, knowing how to adjust for your table height. Happy coding!