FredGrit

2025年9月7日

WPF listbox render 230 million items via task and Application.Current.Dispatcher.InvokeAsync without UI blocking issues

摘要： Install-Package System.Management; private object collectionLock = new object(); private async Task LoadDataAsync() { List<string> isbnsList = new Lis 阅读全文

posted @ 2025-09-07 12:30 FredGrit 阅读(8) 评论(0) 推荐(0)

C# get pc total memory and available memory, process private workingset and workingset64

摘要： Install-Package System.Management; Install-Package System.Diagnostics.PerformanceCounter; using System.Diagnostics; using System.Management; public cl 阅读全文

posted @ 2025-09-07 11:34 FredGrit 阅读(25) 评论(0) 推荐(0)

2025年9月6日

WPF Task.Yield() UI issues spinning circle,Task.Delay(1) works fine,gives the UI message pump breathing room to repaint, handle input, and process your pending BeginInvoke calls.

摘要： private object objLock=new object(); private async Task LoadDataAsync() { var dir = @"../../../Images"; if (!Directory.Exists(dir)) { return; } await 阅读全文

posted @ 2025-09-06 13:10 FredGrit 阅读(15) 评论(0) 推荐(0)

WPF Destination array was not long enough. Check the destination index, length, and the array's lower bounds. (Parameter 'destinationArray')

摘要： private async Task LoadDataAsync() { var dir = @"../../../Images"; if (!Directory.Exists(dir)) { return; } await Task.Run(async () => { var imgs = Dir 阅读全文

posted @ 2025-09-06 12:03 FredGrit 阅读(7) 评论(0) 推荐(0)

WPF load data asynchronouly and batch by batch, virtualization, haraware accleration which will enhance performance and resolve UI block issues.

摘要： Install-Package CommunityToolkit.mvvm; 1.Virtualization //Virtualization <DataGrid ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigg 阅读全文

posted @ 2025-09-06 08:28 FredGrit 阅读(11) 评论(0) 推荐(0)

2025年9月5日

WPF DataGrid ContextMenu MenuItem MVVM save all datagrid rows as jpg file via RenderTargetBitmap and JpegBitmapEncoder, Task.Yield() avoid UI blocking issues

摘要： Install-Package CommunityToolkit.Mvvm; //xaml <Window x:Class="WpfApp69.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 阅读全文

posted @ 2025-09-05 23:21 FredGrit 阅读(9) 评论(0) 推荐(0)

C# export list<T> in pdf via iTextSharp, include pdf header title and logo, footer with current page of total pages

摘要： Install-Package iTextSharp; Install-Package System.Drawing.Common; using iTextSharp.text; using iTextSharp.text.pdf; using System.Diagnostics; using D 阅读全文

posted @ 2025-09-05 21:14 FredGrit 阅读(7) 评论(0) 推荐(0)

C# BenchmarkDotNet

摘要： Install-Package BenchmarkDotNet; using BenchmarkDotNet.Attributes; using BenchmarkDotNet.Running; using System.Linq.Expressions; using System.Reflecti 阅读全文

posted @ 2025-09-05 17:41 FredGrit 阅读(13) 评论(0) 推荐(0)

C# insert string and images into word via openxml

摘要： Install-Package DocumentFormat.OpenXml; Install-Package System.Drawing.Common; using DocumentFormat.OpenXml; using DocumentFormat.OpenXml.Packaging; u 阅读全文

posted @ 2025-09-05 14:18 FredGrit 阅读(10) 评论(0) 推荐(0)

C# openxml insert string to document, include content, fontSize ,alignment , isBold ,color,fontFamily, isItalici,isUnderline

摘要： Install-Package DocumentFormat.OpenXml; static void CreateOrOrOpenWordFileInsertString(string wordFile, string str, int fontSize = 20, string alignmen 阅读全文

posted @ 2025-09-05 11:02 FredGrit 阅读(8) 评论(0) 推荐(0)

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