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Add elmah.io shared blog post code
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‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Error.cshtml‎

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@page
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@model ErrorModel
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@{
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ViewData["Title"] = "Error";
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}
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<h1 class="text-danger">Error.</h1>
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<h2 class="text-danger">An error occurred while processing your request.</h2>
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@if (Model.ShowRequestId)
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{
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<p>
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<strong>Request ID:</strong> <code>@Model.RequestId</code>
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</p>
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}
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<h3>Development Mode</h3>
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<p>
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Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
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</p>
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<p>
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<strong>The Development environment shouldn't be enabled for deployed applications.</strong>
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It can result in displaying sensitive information from exceptions to end users.
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For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
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and restarting the app.
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</p>

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Error.cshtml.cs‎

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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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using Microsoft.Extensions.Logging;
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namespace PostSharp.Samples.Logging.ElmahIo.Pages
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{
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[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
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public class ErrorModel : PageModel
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{
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public string RequestId
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{
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get;
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set;
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}
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public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
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private readonly ILogger<ErrorModel> _logger;
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public ErrorModel(ILogger<ErrorModel> logger)
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{
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_logger = logger;
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}
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public void OnGet()
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{
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RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
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}
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}
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}

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Index.cshtml‎

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@page
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@model IndexModel
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@{
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ViewData["Title"] = "Home page";
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}
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<div class="text-center">
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<h1 class="display-4">What am I made of?</h1>
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<p>
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<form method="post">
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How much do you weigh, in kilograms:&nbsp;
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<input asp-for="NumberOfKgs" />
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<input type="submit" value="Tell me about my body" />
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<br></br>
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<p style="white-space: pre-line">@ViewData.Model.Result</p>
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</form>
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</p>
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</div>

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Index.cshtml.cs‎

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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Numerics;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Localization;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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using Microsoft.Extensions.Logging;
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using Serilog;
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namespace PostSharp.Samples.Logging.ElmahIo.Pages
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{
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public class IndexModel : PageModel
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{
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[BindProperty]
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public string Result
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{
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get;
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set;
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}
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[BindProperty]
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public string NumberOfKgs
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{
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get;
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set;
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}
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public void OnPost()
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{
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this.WriteInterestingFacts();
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}
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public void OnGet()
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{
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this.WriteInterestingFacts();
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}
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private void WriteInterestingFacts()
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{
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try
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{
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float kgs = this.GetKilograms(this.NumberOfKgs);
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this.Result =
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"You weigh " + kgs + " kilograms.\n" +
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"You would sell for " + WorthInGold(kgs) + " if you were made of gold.\n" +
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"You would explode as " + Explosion(kgs) + " atomic bombs if you were turned into pure energy.\n" +
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"You would fall for " + EiffelFall(kgs) + " seconds if you fell from the Eiffel Tower.";
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}
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catch (Exception)
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{
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this.Result = "I can't tell you anything about your body.";
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}
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}
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private string EiffelFall(in float kgs) // Ha ha, your mass doesn't actually matter ^^
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{
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int distance = 300; // m
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// distance = acceleration * time squared
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// time = square root of (distance / acceleration)
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float time = MathF.Sqrt((float) distance / 9.81f);
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return time.ToString("F2");
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}
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private string Explosion(in float kgs)
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{
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// e = m * c * c
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BigInteger c = 299792458;
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BigInteger cc = c * c;
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BigInteger eTimes1000 = (cc) * new BigInteger((int) (kgs * 1000)); // reasonable accuracy
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BigInteger e = eTimes1000 / 1000;
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BigInteger atomicEnergy = new BigInteger(100) * 1000 * 1000 * 1000 * 1000;
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BigInteger bombs = e / atomicEnergy;
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return bombs.ToString();
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}
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private string WorthInGold(in float kgs)
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{
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float costOfKgOfGold = 61612; // USD as of September 22, 2020
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return "$" + (kgs * costOfKgOfGold);
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}
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private float GetKilograms(string numberOfStars)
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{
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return float.Parse(numberOfStars, this.GetUserCulture());
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}
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private CultureInfo GetUserCulture()
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{
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var locale = this.Request.HttpContext.Features.Get<IRequestCultureFeature>();
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return locale.RequestCulture.Culture;
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}
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}
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}

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Shared/_Layout.cshtml‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<title>@ViewData["Title"] - PostSharp.Samples.Logging.ElmahIo</title>
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<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css"/>
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<link rel="stylesheet" href="~/css/site.css"/>
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</head>
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<body>
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<header>
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<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
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<div class="container">
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<a class="navbar-brand" asp-area="" asp-page="/Index">PostSharp.Samples.Logging.ElmahIo</a>
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<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
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aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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</button>
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<div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
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<ul class="navbar-nav flex-grow-1">
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<li class="nav-item">
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<a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
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</li>
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</ul>
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</div>
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</div>
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</nav>
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</header>
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<div class="container">
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<main role="main" class="pb-3">
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@RenderBody()
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</main>
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</div>
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<footer class="border-top footer text-muted">
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<div class="container">
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&copy; 2020 - PostSharp.Samples.Logging.ElmahIo
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</div>
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</footer>
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<script src="~/lib/jquery/dist/jquery.min.js"></script>
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<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
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<script src="~/js/site.js" asp-append-version="true"></script>
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@RenderSection("Scripts", required: false)
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</body>
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</html>

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/Shared/_ValidationScriptsPartial.cshtml‎

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<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
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<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/_ViewImports.cshtml‎

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@using PostSharp.Samples.Logging.ElmahIo
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@namespace PostSharp.Samples.Logging.ElmahIo.Pages
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@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Pages/_ViewStart.cshtml‎

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@{
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Layout = "_Layout";
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}

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/PostSharp.Samples.Logging.ElmahIo.csproj‎

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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>netcoreapp3.1</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Elmah.Io.AspNetCore.Serilog">
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<Version>3.0.3</Version>
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</PackageReference>
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<PackageReference Include="PostSharp.Patterns.Diagnostics">
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<Version>6.6.14</Version>
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</PackageReference>
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<PackageReference Include="PostSharp.Patterns.Diagnostics.Serilog">
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<Version>6.6.14</Version>
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</PackageReference>
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<PackageReference Include="Serilog.Sinks.ColoredConsole">
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<Version>3.0.1</Version>
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</PackageReference>
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<PackageReference Include="Serilog.Sinks.ElmahIO">
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<Version>3.5.0</Version>
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</PackageReference>
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<PackageReference Include="Serilog.Sinks.File">
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<Version>4.1.0</Version>
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</PackageReference>
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</ItemGroup>
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</Project>

‎Diagnostics/PostSharp.Samples.Logging.ElmahIo/Program.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Hosting;
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using Microsoft.Extensions.Logging;
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using PostSharp.Patterns.Diagnostics;
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using PostSharp.Patterns.Diagnostics.Backends.Serilog;
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using Serilog;
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using Serilog.Events;
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using Serilog.Sinks.ElmahIo;
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// Add PostSharp Logging to all methods and properties in the entire application:
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[assembly: Log]
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namespace PostSharp.Samples.Logging.ElmahIo
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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// Set up Serilog:
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const string formatString = @"{Timestamp:yyyy-MM-dd HH:mm:ss}[{Level:u3}] {Indent:l}{Message}{NewLine}{Exception}";
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Log.Logger =
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new LoggerConfiguration()
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.MinimumLevel.Debug() // Capture all logs (PostSharp by default logs most traces at the Debug level)
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.Enrich.FromLogContext() // Add information from the web request to Serilog (used by elmah.io)
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.WriteTo.ColoredConsole(outputTemplate: formatString) // Pretty formatting and indentation for console/file
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.WriteTo.File("log.log", outputTemplate: formatString)
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.WriteTo.ElmahIo(new ElmahIoSinkOptions(
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"0b50912ab59d41a599bba7f8dfc7b89e", // Use key and ID from your elmah.io account
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new Guid("aaffe1c7-56c9-4b57-8f31-0eacc6c39481")
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)
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{
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MinimumLogEventLevel = LogEventLevel.Warning // only send warnings and errors to elmah.io
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})
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.CreateLogger();
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// Set up PostSharp Logging:
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LoggingServices.DefaultBackend = new SerilogLoggingBackend(Log.Logger)
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{
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Options =
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{
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// Add exception stack traces to both detailed and elmah.io logs:
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IncludeExceptionDetails = true
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}
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};
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CreateHostBuilder(args).Build().Run();
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}
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public static IHostBuilder CreateHostBuilder(string[] args) =>
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Host.CreateDefaultBuilder(args)
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.ConfigureWebHostDefaults(webBuilder =>
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{
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webBuilder.UseStartup<Startup>();
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});
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}
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}

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