// BUGBUG: I'm sure these GUIDs are defined somewhere but I'm not sure which library contains them, so defining them here.
    DEFINE_GUID(IID_IFoo, 0x12345678,0x1234,0x1234,0x12,0x12,0x12,0x12,0x12,0x12,0x12,0x12);

Tools>Options>Environment>Task List

در لیست پایینی که بخش فیلترهاست، میتوانید یک فیلتر را تعریف کنید تا بر اساس این فیلتر مشخص کنید که چه todo هایی نمایش یابند. برای فیلتر کردن در در پنل todo، در نوار ابزار، آیکن قیفی شکل را کلیک کند تا لیست فیلترها نمایش یابند.

نحوه صحیح قرار دادن یک todo به شکل زیر است:

// TODO:2008-12-06:johnc:Add support for negative offsets.
// While it is unlikely that we get a negative offset, it can
// occur if the garbage collector runs out of space.

import React, { Component } from "react";


class LoginForm extends Component {
  render() {
    return <h1>Login</h1>;
  }
}

export default LoginForm;

import LoginForm from "./components/loginForm";
//...

function App() {
  return (
    <React.Fragment>
      <NavBar />
      <main className="container">
        <Switch>
          <Route path="/login" component={LoginForm} />
          <Route path="/movies/:id" component={MovieForm} />
          // ...
        </Switch>
      </main>
    </React.Fragment>
  );
}

<NavLink className="nav-item nav-link" to="/login">
   Login
</NavLink>

import React, { Component } from "react";


class LoginForm extends Component {
  render() {
    return (
      <form>
        <div className="form-group">
          <label htmlFor="username">Username</label>
          <input id="username" type="text" className="form-control" />
        </div>
        <div className="form-group">
          <label htmlFor="password">Password</label>
          <input id="password" type="password" className="form-control" />
        </div>
        <button className="btn btn-primary">Login</button>
      </form>
    );
  }
}

export default LoginForm;

class LoginForm extends Component {
  handleSubmit = e => {
    console.log("handleSubmit", e);
    e.preventDefault();

    // call the server
  };

  render() {
    return (
      <form onSubmit={this.handleSubmit}>
      //...

const username = document.getElementById("username").value;

class LoginForm extends Component {
  username = React.createRef();

<input
  ref={this.username}
  id="username"
  type="text"
  className="form-control"
/>

  handleSubmit = e => {
    e.preventDefault();

    // call the server
    const username = this.username.current.value;
    console.log("handleSubmit", username);
  };

class LoginForm extends Component {
  username = React.createRef();

  componentDidMount = () => {
    this.username.current.focus();
  };

<input
  autoFocus
  ref={this.username}
  id="username"
  type="text"
  className="form-control"
/>

class LoginForm extends Component {
  state = {
    account: { username: "", password: "" }
  };

<input 
  value={this.state.account.username}

<input 
  value={this.state.account.username}
  onChange={this.handleChange}

  handleChange = e => {
    const account = { ...this.state.account }; //cloning an object
    account.username = e.currentTarget.value;
    this.setState({ account });
  };

  handleChange = e => {
    const account = { ...this.state.account }; //cloning an object
    account[e.currentTarget.name] = e.currentTarget.value;
    this.setState({ account });
  };

<input
  id="password"
  name="password"
  value={this.state.account.password}
  onChange={this.handleChange}
  type="password"
  className="form-control"
/>

  handleChange = ({ currentTarget: input }) => {
    const account = { ...this.state.account }; //cloning an object
    account[input.name] = input.value;
    this.setState({ account });
  };

Warning: A component is changing an uncontrolled input of type text to be controlled.
Input elements should not switch from uncontrolled to controlled (or vice versa).
Decide between using a controlled or uncontrolled input element for the lifetime of the component.
More info: https://fb.me/react-controlled-components

Warning: `value` prop on `input` should not be null.
Consider using an empty string to clear the component or `undefined` for uncontrolled components.

import React from "react";

const Input = ({ name, label, value, onChange }) => {
  return (
    <div className="form-group">
      <label htmlFor={name}>{label}</label>
      <input
        value={value}
        onChange={onChange}
        id={name}
        name={name}
        type="text"
        className="form-control"
      />
    </div>
  );
};

export default Input;

import Input from "./common/input";

  render() {
    const { account } = this.state;
    return (
      <form onSubmit={this.handleSubmit}>
        <Input
          name="username"
          label="Username"
          value={account.username}
          onChange={this.handleChange}
        />
        <Input
          name="password"
          label="Password"
          value={account.password}
          onChange={this.handleChange}
        />
        <button className="btn btn-primary">Login</button>
      </form>
    );

using System;
using System.Web;

namespace OPMLCleaner
{
    public static class UrlNormalization
    {
        public static bool AreTheSameUrls(this string url1, string url2)
        {
            url1 = url1.NormalizeUrl();
            url2 = url2.NormalizeUrl();
            return url1.Equals(url2);
        }

        public static bool AreTheSameUrls(this Uri uri1, Uri uri2)
        {
            var url1 = uri1.NormalizeUrl();
            var url2 = uri2.NormalizeUrl();
            return url1.Equals(url2);
        }

        public static string[] DefaultDirectoryIndexes = new[]
            {
                "default.asp",
                "default.aspx",
                "index.htm",
                "index.html",
                "index.php"
            };

        public static string NormalizeUrl(this Uri uri)
        {
            var url = urlToLower(uri);
            url = limitProtocols(url);
            url = removeDefaultDirectoryIndexes(url);
            url = removeTheFragment(url);
            url = removeDuplicateSlashes(url);
            url = addWww(url);
            url = removeFeedburnerPart(url);
            return removeTrailingSlashAndEmptyQuery(url);
        }

        public static string NormalizeUrl(this string url)
        {
            return NormalizeUrl(new Uri(url));
        }

        private static string removeFeedburnerPart(string url)
        {
            var idx = url.IndexOf("utm_source=", StringComparison.Ordinal);
            return idx == -1 ? url : url.Substring(0, idx - 1);
        }

        private static string addWww(string url)
        {
            if (new Uri(url).Host.Split('.').Length == 2 && !url.Contains("://www."))
            {
                return url.Replace("://", "://www.");
            }
            return url;
        }

        private static string removeDuplicateSlashes(string url)
        {
            var path = new Uri(url).AbsolutePath;
            return path.Contains("//") ? url.Replace(path, path.Replace("//", "/")) : url;
        }

        private static string limitProtocols(string url)
        {
            return new Uri(url).Scheme == "https" ? url.Replace("https://", "http://") : url;
        }

        private static string removeTheFragment(string url)
        {
            var fragment = new Uri(url).Fragment;
            return string.IsNullOrWhiteSpace(fragment) ? url : url.Replace(fragment, string.Empty);
        }

        private static string urlToLower(Uri uri)
        {
            return HttpUtility.UrlDecode(uri.AbsoluteUri.ToLowerInvariant());
        }

        private static string removeTrailingSlashAndEmptyQuery(string url)
        {
            return url
                    .TrimEnd(new[] { '?' })
                    .TrimEnd(new[] { '/' });
        }

        private static string removeDefaultDirectoryIndexes(string url)
        {
            foreach (var index in DefaultDirectoryIndexes)
            {
                if (url.EndsWith(index))
                {
                    url = url.TrimEnd(index.ToCharArray());
                    break;
                }
            }
            return url;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<opml xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" version="1.0">
  <body>
    <outline text="آی تی ایرانی">
    <outline type="rss" 
                           text="‫فید کلی آخرین نظرات، مطالب، اشتراک‌ها و پروژه‌های .NET Tips" 
                           title="‫فید کلی آخرین نظرات، مطالب، اشتراک‌ها و پروژه‌های .NET Tips" 
                           xmlUrl="https://www.dntips.ir/Feed/LatestChanges"
                           htmlUrl="https://www.dntips.ir/" />
    </outline> 
  </body>
</opml>

using System.Xml.Serialization;

namespace OPMLCleaner
{
    [XmlType(TypeName="outline")]
    public class Opml
    {
        [XmlAttribute(AttributeName="text")]
        public string Text { get; set; }

        [XmlAttribute(AttributeName = "title")]
        public string Title { get; set; }

        [XmlAttribute(AttributeName = "type")]
        public string Type { get; set; }

        [XmlAttribute(AttributeName = "xmlUrl")]
        public string XmlUrl { get; set; }

        [XmlAttribute(AttributeName = "htmlUrl")]
        public string HtmlUrl { get; set; }
    }
}

var document = XDocument.Load("it-92-03-01.opml");
var results = (from node in document.Descendants("outline")
                           where node.Attribute("htmlUrl") != null && node.Parent.Attribute("text") != null 
                            && node.Parent.Attribute("text").Value == "آی تی ایرانی"
                           select new Opml
                           {
                               HtmlUrl = (string)node.Attribute("htmlUrl"),
                               Text = (string)node.Attribute("text"),
                               Title = (string)node.Attribute("title"),
                               Type = (string)node.Attribute("type"),
                               XmlUrl = (string)node.Attribute("xmlUrl")
                           }).ToList();

using System.Collections.Generic;

namespace OPMLCleaner
{
    public class OpmlCompare : EqualityComparer<Opml>
    {
        public override bool Equals(Opml x, Opml y)
        {
            return UrlNormalization.AreTheSameUrls(x.HtmlUrl, y.HtmlUrl);                
        }

        public override int GetHashCode(Opml obj)
        {
            return obj.HtmlUrl.GetHashCode();
        }
    }
}

 var distinctResults = results.Distinct(new OpmlCompare()).ToList();

• معرفی ELMAH

• ELMAH 1.1

• یکپارچه کردن ELMAH با WCF RIA Services

...
}
catch (Exception ex)
{
   Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
...