👀 Views: 1 💬 Answers: 1 📅 Created: 2025-09-09

winforms performance seo datagridview C#

I'm integrating two systems and Building an application that retrieves and displays SEO metrics for client websites, I've run into some performance hurdles. The app uses WinForms and pulls data from an external API, which can sometimes be slow. Recently, I implemented a service layer that caches results to minimize API calls, but the UI still feels sluggish when displaying large datasets, especially in a DataGridView. Here's a snippet of how I fetch and bind the data: ```csharp public async Task<List<SeoData>> FetchSeoDataAsync() { // Check cache first if (IsCacheValid()) { return GetDataFromCache(); } var response = await _httpClient.GetAsync("https://api.example.com/seo"); response.EnsureSuccessStatusCode(); var content = await response.Content.ReadAsStringAsync(); var seoData = JsonConvert.DeserializeObject<List<SeoData>>(content); CacheData(seoData); return seoData; } ``` Data binding is done like this: ```csharp private async void LoadData() { var data = await FetchSeoDataAsync(); dataGridView.DataSource = data; } ``` While this works decently for smaller datasets, once it reaches about 1,000 records, the UI freezes momentarily during the binding process. Testing with the `VirtualMode` property set to true on the DataGridView didn't yield a significant performance boost. I also explored using `DataTable` instead of direct binding to a list, but the results were similar. One thought was to implement pagination, but that could complicate the UX for users wanting to see all data at once. Alternatively, could background loading help? If so, I'm curious how to manage that while maintaining the DataGridView's responsiveness. Anyone else faced similar challenges with WinForms applications and large data sets? What optimizations or design patterns did you adopt for smoother performance? My team is using C# for this application. Any examples would be super helpful. Any advice would be much appreciated.