F12 Shows Your API Key: Hiding Third-Party Tokens Behind an Azure Function
Learn how to keep third-party API keys out of the browser by proxying SPFx web part calls through an Azure Function that swaps in the secret server-side.
SharePoint Development
Real SharePoint development problems in C#: provisioning, list items, navigation, content types and the API costs nobody warns you about.
This is the broadest thing I write about, and the reason most people end up here. Almost everything on this blog touches SharePoint somewhere: reading list items without melting the API, provisioning sites that survive a retry, moving content types on a list that is already in production, or working out why the portal offers a checkbox that no API exposes.
Most of it is C# rather than PowerShell. That is partly taste and partly the work: when SharePoint sits behind a web app or a background job, you need the same operation to be fast, retryable and testable, and that pushes you toward the client libraries rather than a script.
If you are new here, the narrower topics are where the real detail lives. Start with CSOM performance if something is slow, or provisioning if something is flaky.
Provision Forward, Never Backward: Checkpointing Durable Functions
Learn how to checkpoint a Durable Functions orchestration so a failed SharePoint provisioning run resumes where it stopped instead of starting over.
The SharePoint CSOM Performance Playbook: Stop Paying for Wasted API Calls
Learn how to speed up SharePoint CSOM with five proven techniques - batching, CAML joins, change detection, server-side exception handling, and fast taxonomy loading.
One Big PnP Template or Many Small Ones?
After testing with DevProxy, I found that monolithic PnP templates silently destroy your retry strategy. Here's what I learned.
SharePoint News Links via Graph SDK: Filling in the Gaps the Docs Left Behind
Learn how to create SharePoint News Link pages with a banner image using the Microsoft Graph Beta SDK in C# — including the multipart upload the official documentation leaves completely undocumented.
Stop Spamming Your Users: Create Microsoft 365 Groups Without Welcome Emails
Learn how to create Microsoft 365 groups programmatically with the Graph SDK in C# without sending a welcome email flood to every member.
CSOM Performance: Fast Taxonomy Loading for SharePoint List Items with Many Terms
An undocumented but effective approach to dramatically speed up CSOM taxonomy field loading when dealing with SharePoint list items that have many terms.
SharePoint CSOM: Prevent Unnecessary Updates and API Calls
The SharePoint API call that wasted resources is now optimized with smart change detection, reducing unnecessary updates and costs.
SharePoint's Server-Side Try-Catch: ExceptionHandlingScope
Discover how SharePoint's ExceptionHandlingScope can optimize your API calls, reduce costs, and enhance performance with server-side exception handling.
Optimize SharePoint Webhooks: Debouncing User Actions
Learn how to effectively debounce SharePoint webhooks to optimize performance and reduce unnecessary operations when users frequently click save.
Stop Retrying Everything: Smart Graph Batch Retry Logic
Learn smart retry logic for Microsoft Graph batching to optimize API calls, reduce throttling, and enhance user experience.
Graph Batching for File Content: Mapping Requests to Responses
How to handle Graph batching when downloading file content and mapping responses back to original requests
CSOM Performance Optimization: Why You Should Batch Your SharePoint Operations
Learn how to dramatically improve CSOM performance by batching operations instead of executing them one by one
DevProxy: How to Test API Rate Limiting and Throttling in C# Development
Discover how to simulate Microsoft Graph and SharePoint throttling locally using DevProxy, and prevent production slowdowns before they happen.
Efficient Multi-List Queries in CSOM: Using CAML Joins with CAMLEX
Learn how to efficiently query multiple SharePoint lists using CAML joins instead of multiple API calls to avoid throttling
Microsoft Graph SDK Authentication in C#: Quick Start Guide
Quick setup guide for Microsoft Graph SDK using your existing app registration
PnP.Framework Authentication in C#: A Beginner's Guide
Learn to authenticate C# applications with PnP.Framework and Azure using certificates in this beginner's guide to app registration and permissions.
Export files as zip from SharePoint
Download files from SharePoint as a zip, as is possible through the UI
Update list to use content type
We've all tried creating a SharePoint list without using Content Types from the start. It seems like the quick solution, but it can lead to challenges later when restructuring the list. This post explains why using Content Types from the beginning is a smart move that can save time and hassle in the long run.
SPFx Audience targeting
How to easy implement audience targeting for for one's components
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