Лучшие практики для единственного экземпляра WPF

Question

Лучшие практики для единственного экземпляра WPF

В итоге я создал более общий HTML-помощник: -

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Mvc;

namespace Wallboards.Web.Helpers
{
    /// <summary>
    /// Hidden Index Html Helper
    /// </summary>
    public static class HiddenIndexHtmlHelper
    {
        /// <summary>
        /// Hiddens the index for.
        /// </summary>
        /// <typeparam name="TModel">The type of the model.</typeparam>
        /// <typeparam name="TProperty">The type of the property.</typeparam>
        /// <param name="htmlHelper">The HTML helper.</param>
        /// <param name="expression">The expression.</param>
        /// <param name="index">The Index</param>
        /// <returns>Returns Hidden Index For</returns>
        public static MvcHtmlString HiddenIndexFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, int index)
        {
            var metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
            var propName = metadata.PropertyName;

            StringBuilder sb = new StringBuilder();
            sb.AppendFormat("<input type=\"hidden\" name=\"{0}.Index\" autocomplete=\"off\" value=\"{1}\" />", propName, index);

            return MvcHtmlString.Create(sb.ToString());
        }
    }
}

И затем включил его в каждую итерацию элемента списка в вашем представлении Razor: -

@Html.HiddenIndexFor(m => m.ExistingWallboardMessages, i)

34

mutex singleton wpf c#

задан Tommaso Belluzzo 24 January 2013 в 16:48

1 ответ

Другие вопросы по тегам:

mutex singleton wpf c#

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score 1 · Answer 1

Мое решение для.Net Core 3 Wpf Single Instance Application:

[STAThread]
public static void Main()
{
    StartSingleInstanceApplication<CntApplication>();
}

public static void StartSingleInstanceApplication<T>()
    where T : RichApplication
{
    DebuggerOutput.GetInstance();

    Assembly assembly = typeof(T).Assembly;
    string mutexName = $"SingleInstanceApplication/{assembly.GetName().Name}/{assembly.GetType().GUID}";

    Mutex mutex = new Mutex(true, mutexName, out bool mutexCreated);

    if (!mutexCreated)
    {
        mutex = null;

        var client = new NamedPipeClientStream(mutexName);
        client.Connect();

        using (StreamWriter writer = new StreamWriter(client))
            writer.Write(string.Join("\t", Environment.GetCommandLineArgs()));

        return;
    }
    else
    {
        T application = Activator.CreateInstance<T>();

        application.Exit += (object sender, ExitEventArgs e) =>
        {
            mutex.ReleaseMutex();
            mutex.Close();
            mutex = null;
        };

        Task.Factory.StartNew(() =>
        {
            while (mutex != null)
            {
                using (var server = new NamedPipeServerStream(mutexName))
                {
                    server.WaitForConnection();

                    using (StreamReader reader = new StreamReader(server))
                    {
                        string[] args = reader.ReadToEnd().Split("\t", StringSplitOptions.RemoveEmptyEntries).ToArray();
                        UIDispatcher.GetInstance().Invoke(() => application.ExecuteCommandLineArgs(args));
                    }
                }
            }
        }, TaskCreationOptions.LongRunning);

        typeof(T).GetMethod("InitializeComponent").Invoke(application, new object[] { });
        application.Run();
    }
}