DEV Community: John Tsioumpris The latest articles on DEV Community by John Tsioumpris (@tsgiannis). https://dev.to/tsgiannis https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F865822%2F272463c2-ab9e-4a4f-a8da-bad95f830279.jpeg DEV Community: John Tsioumpris https://dev.to/tsgiannis en Hierarchical DataGridView like MsHFlexGrid but for .NET and on steroids John Tsioumpris Tue, 18 Nov 2025 07:34:24 +0000 https://dev.to/tsgiannis/hierarchical-datagridview-like-mshflexgrid-but-for-net-and-on-steroids-3lp2 https://dev.to/tsgiannis/hierarchical-datagridview-like-mshflexgrid-but-for-net-and-on-steroids-3lp2 <p><strong>🔥 What if your .NET DataGridView could handle 1,000+ hierarchical records—without breaking a sweat?</strong></p> <p>I’ve been tinkering with something <strong>bold</strong>: A <strong>WinForms DataGridView</strong> that doesn’t just display data—it <strong>commands it</strong>.</p> <p>💥 <strong>1,000 root items</strong>? Loaded.<br> 💥 <strong>Nested child and grandchild records</strong>? Organized.<br> 💥 <strong>Record badges</strong>? For instant clarity.<br> 💥 <strong>Performance</strong>? Smooth as silk.</p> <p>This isn’t just another grid. It’s a <strong>work in progress</strong> with a mission: To make complex data feel effortless.<br> Want to take a look ?<br> Check short video here : <a href="https://youtu.be/K8O16GaSaxQ" rel="noopener noreferrer">https://youtu.be/K8O16GaSaxQ</a></p> <h1> DotNet #WinForms #DataGridView #CodingInnovation #SoftwareThatWorks #ComingSoon </h1> csharp hierarchical dotnet I’m building a Python DataGridView and want to know if it’s useful. Here’s a teaser—what do you think? John Tsioumpris Fri, 07 Nov 2025 17:38:54 +0000 https://dev.to/tsgiannis/im-building-a-python-datagridview-and-want-to-know-if-its-useful-heres-a-teaser-what-do-you-2mo9 https://dev.to/tsgiannis/im-building-a-python-datagridview-and-want-to-know-if-its-useful-heres-a-teaser-what-do-you-2mo9 <p>As a Python developer, I’ve always missed the flexibility of Excel-like grids in my apps. So, I started building a high-performance DataGridView for Python. Here’s a quick teaser of what’s coming—let me know if this is something you’d use!<br> <iframe src="https://www.youtube.com/embed/CH5pwNWcw5U"> </iframe> </p> python datagridview performance