FredGrit

2026年3月17日

C# WebAPI [HttpGet("{cnt}"] pass argument

摘要： using Microsoft.AspNetCore.Mvc; using WebApplication3.Models; using WebApplication3.Services; namespace WebApplication3.Controllers { [ApiController] 阅读全文

posted @ 2026-03-17 23:08 FredGrit 阅读(6) 评论(0) 推荐(0)

WPF implement ICommand with async execute

摘要： public class DelCommand : ICommand { private Action<object?>? syncExecute; private readonly Func<object?, Task> asyncExecute; private Predicate<object 阅读全文

posted @ 2026-03-17 22:42 FredGrit 阅读(15) 评论(0) 推荐(0)

WPF ListBox control virtualization in mvvm

摘要： <Window x:Class="WpfApp6.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/200 阅读全文

posted @ 2026-03-17 21:40 FredGrit 阅读(14) 评论(0) 推荐(0)

2026年3月15日

WPF Data Source invoke from web api

摘要： Install-Package Newtonsoft.json public async Task GetServiceDataAsync() { string bookUrl = "https://localhost:7205/api/book"; using (HttpClient hclien 阅读全文

posted @ 2026-03-15 00:42 FredGrit 阅读(19) 评论(0) 推荐(0)

C# WebAPI

摘要： Install-Package Swashbuckle.AspNetCore namespace WebApplication1.Models { public class Book { public int Id { get; set; } public string Name { get; se 阅读全文

posted @ 2026-03-15 00:01 FredGrit 阅读(11) 评论(0) 推荐(0)

2026年3月14日

Python write huge data to json and file in batch

摘要： import time import threading import uuid from datetime import datetime import os import psutil import pandas as pd import json idx=0 idx_lock=threadin 阅读全文

posted @ 2026-03-14 22:01 FredGrit 阅读(17) 评论(0) 推荐(0)

2026年3月9日

C# IAsyncEnumerable

摘要： using System.Collections; using System.Diagnostics; using System.Threading.Tasks; namespace ConsoleApp2 { internal class Program { static async Task M 阅读全文

posted @ 2026-03-09 21:06 FredGrit 阅读(10) 评论(0) 推荐(0)

Python server push message to client actively via server sent event (SSE) event stream, event source listen onmessage and onerror

摘要： //app.py from flask import Flask, render_template, Response import random import time from datetime import datetime import threading import json app = 阅读全文

posted @ 2026-03-09 20:32 FredGrit 阅读(12) 评论(0) 推荐(0)

2026年3月3日

WPF custom VirtualizingGridPanel inherited from VirtualizingPanel and IScrollInfo,MeasureOverride and ArrangeOverride

摘要： public class VirtualizingGridPanel : VirtualizingPanel, IScrollInfo { public double ColumnWidth { get; set; } = 200; public double ItemHeight { get; s 阅读全文

posted @ 2026-03-03 22:13 FredGrit 阅读(22) 评论(0) 推荐(0)

Python json serialize write 100M items to json via batch

摘要： def append_data_list_to_json(json_file,start_idx,end_idx,is_first=False,is_last=False,data_list=[],batch_idx=""): json_str=json.dumps(data_list,indent 阅读全文

posted @ 2026-03-03 21:17 FredGrit 阅读(14) 评论(0) 推荐(0)

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