mizuneko

public sealed class KeepTime : IDisposable {
    private Stopwatch _stopwatch;
    public KeepTime() {
        Debug.WriteLine(String.Format("Start {0}", 
            DateTime.Now.ToShortTimeString()));
        _stopwatch = Stopwatch.StartNew();
    }
    public void Dispose() {
        _stopwatch.Stop();
        Debug.WriteLine(String.Format("Stop  {0} ({1}ミリ秒)",

mizuneko

#region ==== Abstract Class : ViewModelBase 
/// <summary>
/// ViewModelの抽象基底クラス
///    INotifyPropertyChanged, IDataErrorInfo を実装、
///    その他 ViewModel用のヘルパークラス等を提供する
/// </summary>
public abstract class ViewModelBase : INotifyPropertyChanged, IDataErrorInfo
{
    //  省略

mizuneko

string text = "マルチバイト文字";
int size = 10; // 10バイト
Encoding e = System.Text.Encoding.GetEncoding("Shift_JIS");
string result = new String(text.TakeWhile((c, i) => e.GetByteCount(text.Substring(0, i + 1)) <= size).ToArray());

mizuneko

using System.ComponentModel;

public static class MyTryParse
{
    public static bool TryParse<T>(string input, ref T result)
    {
        try
        {
            var converter = TypeDescriptor.GetConverter(typeof(T));
            if(converter != null)

mizuneko

using System;
using System.Collections.ObjectModel;

/// <summary>
/// 配列の拡張メソッドを管理するクラス
/// </summary>
public static class ArrayExtensions
{
    /// <summary>
    /// 指定した配列をラップする読み取り専用のラッパーを作成します

mizuneko

readonly Action<string, Action> _measurement = ((desc, execute) =>
{
    var sw = new Stopwatch();
    sw.Start();
    execute();
    sw.Stop();
    Console.WriteLine("{0}:{1}", desc, sw.Elapsed);
});

var rand = new Random();

mizuneko

public int ImportCsvData(string fullPath, string targetTableName, SqlConnection conn)
{
    int affected = 0;
    System.IO.FileInfo fi = new System.IO.FileInfo(fullPath);
    
    using (System.Data.Odbc.OdbcConnection odbcconn = new System.Data.Odbc.OdbcConnection(@"DRIVER={Microsoft Text Driver (*.txt; *.csv)};DefaultDir=" + fi.DirectoryName))
    {
        odbcconn.Open();
        System.Data.Odbc.OdbcCommand cmd  = odbcconn.CreateCommand();

mizuneko

public class Company : IFormattable
{
    // プロパティは省略。
    public string ToString(string format, IFormatProvider formatProvider)
    {
        if (format == null || format == "G" || format == "f") {
            return CompnayName;
        }
 
        if (format == "s") {

mizuneko

var cultures = new[] { "ja-jp", "zh-cn", "en-us", "en-gb", "fr-fr", "de-de", "pt-br", "tr-tr", "he-il" }; 
var price = 9800;

foreach (var c in cultures) 
{ 
    var culture = new CultureInfo(c); 
    var plus = price.ToString("c", culture); 
    var minus = (-price).ToString("c", culture); 
    Console.WriteLine("{0,-11} / {1,-12} ({2})", plus, minus, culture.DisplayName); 
} 

mizuneko

public static Task<IEnumerable<T>> ExecuteAsync<T>(this DataServiceQuery<T> q) 
{ 
    return Task.Factory.FromAsync<IEnumerable<T>>(q.BeginExecute, q.EndExecute, null); 
}

var tasks = Common.GetQueries(context, keys) 
    .Select(x => x.ExecuteAsync() 
        .ContinueWith(t => { lock (w) Common.Output(t.Result, w); }) 
    ).ToArray(); // ToArray を付けて、ここで全タスクを先に起動してしまう。 
Task.WaitAll(tasks.ToArray());