How to subscribe to
How to subscribe to
How to subscribe to and unsubscribe from events (C# Programming Guide)
You subscribe to an event that is published by another class when you want to write custom code that is called when that event is raised. For example, you might subscribe to a button’s click event in order to make your application do something useful when the user clicks the button.
To subscribe to events by using the Visual Studio IDE
If you cannot see the Properties window, in Design view, right-click the form or control for which you want to create an event handler, and select Properties.
On top of the Properties window, click the Events icon.
Double-click the event that you want to create, for example the Load event.
Visual C# creates an empty event handler method and adds it to your code. Alternatively you can add the code manually in Code view. For example, the following lines of code declare an event handler method that will be called when the Form class raises the Load event.
The line of code that is required to subscribe to the event is also automatically generated in the InitializeComponent method in the Form1.Designer.cs file in your project. It resembles this:
To subscribe to events programmatically
Define an event handler method whose signature matches the delegate signature for the event. For example, if the event is based on the EventHandler delegate type, the following code represents the method stub:
You can also use a lambda expression to specify an event handler:
To subscribe to events by using an anonymous function
If you don’t have to unsubscribe from an event later, you can use the addition assignment operator ( += ) to attach an anonymous function as an event handler. In the following example, assume that an object named publisher has an event named RaiseCustomEvent and that a CustomEventArgs class has also been defined to carry some kind of specialized event information. Note that the subscriber class needs a reference to publisher in order to subscribe to its events.
You cannot easily unsubscribe from an event if you used an anonymous function to subscribe to it. To unsubscribe in this scenario, go back to the code where you subscribe to the event, store the anonymous function in a delegate variable, and then add the delegate to the event. We recommend that you don’t use anonymous functions to subscribe to events if you have to unsubscribe from the event at some later point in your code. For more information about anonymous functions, see Lambda expressions.
Unsubscribing
To prevent your event handler from being invoked when the event is raised, unsubscribe from the event. In order to prevent resource leaks, you should unsubscribe from events before you dispose of a subscriber object. Until you unsubscribe from an event, the multicast delegate that underlies the event in the publishing object has a reference to the delegate that encapsulates the subscriber’s event handler. As long as the publishing object holds that reference, garbage collection will not delete your subscriber object.
To unsubscribe from an event
YouTube Subscribe Button: How to Get People to Subscribe to Your Channel From a Link
Did you know you can prompt people to subscribe when they visit your channel?
Here is what this will look like to someone who clicks the link on a laptop or desktop computer:
YouTube will show a Confirm channel subscription message.
And don’t worry – if someone is already a subscriber to your channel when they click this link, they will just see your channel like normal, without the subscription confirmation message.
The Two Methods of Getting People to Subscribe to Your YouTube Channel Directly
There are two main methods you can use to accomplish this goal of getting people to subscribe to your channel directly:
How to Make Your Own YouTube Subscribe Link
Again, this is perfect for linking to your YouTube channel from social media or another place where you don’t have the ability to insert code for a proper subscribe button.
There are two types of channels on YouTube:
In practice, there is no major difference between these types of channels. They each just use a slightly different URL structure.
How to Create a Subscribe Link if Your YouTube Channel is Classified as a Channel
You can tell your channel uses the «channel» structure by visiting your channel and seeing whether it has the word «channel» in the address bar.
Here’s an example:
See the word «channel» here? So in this case, you can use this structure for your link:
You would just replace the in this URL with your channel’s ID, which you can find by going to your YouTube channel.
It will either be a custom name (in this case, freecodecamp ) or it will be a string of base-64 characters like this: UC0syIz79dzjMXIf5VdJ65EA
Once you add your channel ID to that link, you’ll be good to go. The people who click that link will not only be taken to your channel, but they’ll also see the subscription confirmation prompt.
How to Create a Subscribe Link if Your YouTube Channel is Classified as a User
Some older channels are still set up as users rather than channels. You can tell your channel uses the «user» structure by visiting your channel and seeing whether it has the word «user» in the address bar.
Here’s an example:
This channel is set up as a user.
In this case, you would use this structure:
You would just replace the in this URL with your channel’s ID. It will either be a custom name (in this case, thenewboston ) or it will be a string of base-64 characters like this: UC0syIz79dzjMXIf5VdJ65EA
Once you add your channel ID to that link, you’ll be good to go.
How to Make Your Own YouTube Subscribe Button
All right – here is the fun part. YouTube gives you a way to embed subscribe buttons directly into your website.
Here is what one of these buttons looks like:
And here’s the embed-able HTML code you would add to your blog. Note that this code will import Google’s platform.js JavaScript library in order to dynamically show the button and your current subscriber count.
You can embed this code. Be sure to replace with the channel ID you see when you visit your page.
If you have a custom YouTube channel URL like https://www.youtube.com/freecodecamp you may be able to use that as your channel ID, but I find it more reliable to use the full channel 24-character ID.
How to Customize Your YouTube Subscribe Button
There are two other ways you can customize your subscribe button.
How to Show Your Channel Name and Logo in your Subscribe Button
You can change data-layout to be either default or full (which will show your channel name and icon).
Here is what this looks like when you set data-layout=»default» :
And here’s what this looks like when you set data-layout=»full» :
Why I Recommend YouTube Subscribe Links Instead of YouTube Subscribe Buttons
There are several reasons why I recommend using the link approach instead of these dynamic buttons.
But Google does support these YouTube subscription buttons as well, so it’s up to you whether you want to use them.
A YouTube Subscribe Button Customization Tool
Google has an official tool for customizing these YouTube subscribe buttons. You can access it here. Note that you will still need to have access to the HTML of the page you want to embed these buttons into.
Thanks for reading this guide, and I hope it has helped you understand how these YouTube subscribe links and buttons work, and how you can use them to get more people to subscribe to your channel.
If you want more tips on being a successful YouTube creator in general, you can learn from our nonprofit’s 5+ years of experimentation that has helped us become the largest programming channel on YouTube.
Here’s our free YouTube handbook, which also includes a 1 hour video course. We designed it with software-focused creators in mind, but many of the techniques can be applied to other subject domains. I hope it’s helpful for you.
How to subscribe to a channel on Twitch to show your support and unlock exclusive features
Twitter LinkedIn icon The word «in».
LinkedIn Fliboard icon A stylized letter F.
Flipboard Facebook Icon The letter F.
Email Link icon An image of a chain link. It symobilizes a website link url.
Subscribing to a channel on Twitch is a great way to provide support to the streamer, while accessing channel-specific perks like emotes or badges.
If you have Twitch Prime, you automatically get one free subscription to use each month. But you can still subscribe to a channel even if you don’t have Prime, or you’ve already used the free subscription.
And if you’re subscribing via the mobile app, you can subscribe for multiple months in a row. This is great if you don’t want to reactivate your subscription every month.
Either way, the process is simple and should only take a few minutes. Here’s how to subscribe to a channel on Twitch using either the website on your Mac or PC, or the mobile app on your iPhone or Android device.
Check out the products mentioned in this article:
How to subscribe to a channel on Twitch on desktop
Regardless of whether you have Twitch Prime or not, here’s how to subscribe to a channel using the website:
1. On your Mac or PC, go to twitch.tv and log into your account.
2. Navigate to the channel you want to subscribe to by typing the channel’s name into the search bar, or opening an ongoing stream of theirs.
3. Toward the top-right side of the screen, select «Subscribe»; this will prompt a pop-up to appear over your screen
4. If you have Twitch Prime, scroll down in the pop-up and select «Subscribe Free» under «Two ways to subscribe» — if you don’t have Twitch Prime, or you’ve already used your free monthly subscription, select the option that says «Subscribe» followed by a price.
5. Those with Twitch Prime will be automatically subscribed to the channel without further action; others will have to enter their payment details and follow the on-screen instructions to finish their order.
6. Once your payment is processed, your subscriber benefits will be unlocked.
How to subscribe to a channel on Twitch on mobile
If you’re using the mobile app:
1. On your iPhone or Android device, open the Twitch app and head to the channel you want to subscribe to. You can either go to the channel’s page, or open an ongoing stream.
2. If you open their page, tap «Subscribe» in the white box at the top of the page. If you open a stream, tap the purple «Subscribe» button below the video. If you don’t see it, tap the video.
3. A pop-up will appear describing what you get for subscribing. Tap «Subscribe» at the bottom to confirm that you want to join.
4. You’ll be asked how many «Sub Tokens» you want to buy. Every Sub Token counts for one month, so if you buy five, for example, you can subscribe for five months. Once you’ve selected how many months you want to subscribe for, tap «Purchase Sub Tokens» at the bottom.
5. Confirm again how many tokens you want to buy, and tap the price next to the amount you want.
6. Enter your payment information, or if it’s already saved, confirm your purchase. Once it processes, your subscription benefits will be unlocked.
to subscribe to
1 subscribe
to subscribe to подпи́сываться на (газеты, журналы и т.п.)
2 subscribe
3 subscribe
4 subscribe
5 subscribe
6 subscribe
He subscribes regularly to Amnesty International. — Он регулярно жертвует деньги Международной Амнистии.
They subscribed for a large number of shares. — Они подписались на большое количество акций.
I was unwilling to subscribe to the contract, but it seemed that I had no choice. — Я не хотела подписывать контракт, но, кажется, другого выхода у меня не было.
to subscribe to an opinion — разделять чьё-л. мнение
Only mad people would subscribe to such views. — Только сумасшедшие могут разделять эту точку зрения.
7 subscribe
8 subscribe
подписывать(ся), приобретать по подписке
подписывать(ся) (под чем-л.)
приобретать по подписке
присоединяться (к чьему-л. мнению;
to)
to подписываться на (газеты, журналы и т. п.)
to a newspaper подписываться на газету
to an opinion соглашаться с мнением
9 subscribe
he subscribed £400 to the campaign — он пожертвовал на кампанию £400
to subscribe for [to\] shares — подписываться на акции
to subscribe one’s name to a document — подписать документ, поставить свою подпись под документом
10 subscribe to
1. I subscribe to several newspapers. 2. I won’t subscribe to your opinion. He refused to subscribe to their plan.
11 subscribe
12 subscribe
13 subscribe
14 subscribe to
15 subscribe
16 subscribe
17 subscribe
to subscribe one’s name to a document — подписать документ, поставить свою подпись под документом
18 subscribe
19 subscribe
subscribe to a magazine — подписа́ться на журна́л
20 subscribe demand
заявленная нагрузка потребителей
—
[А.С.Гольдберг. Англо-русский энергетический словарь. 2006 г.]
Тематики
См. также в других словарях:
subscribe — sub‧scribe [səbˈskraɪb] verb 1. [intransitive] to pay money regularly in order to have a newspaper or magazine sent to you, or to receive a broadcasting, telephone, or Internet service: subscribe to • Which Internet Service Provider do you… … Financial and business terms
subscribe — sub·scribe /səb skrīb/ vb sub·scribed, sub·scrib·ing [Latin subscribere, literally, to write beneath, from sub under + scribere to write] vt 1: to write (one s name) underneath or at the end of a document we now subscribe our names as witnesses W … Law dictionary
Subscribe.ru — Subscribe.ru … Википедия
subscribe to — arrange to receive something, especially a periodical, regularly by paying in advance. → subscribe subscribe to feel agreement with (an idea or proposal). → subscribe … English new terms dictionary
subscribe — ► VERB 1) (often subscribe to) arrange to receive something, especially a periodical regularly by paying in advance. 2) (subscribe to) contribute (a sum of money) to a project or cause. 3) apply to participate in. 4) (subscribe to) express… … English terms dictionary
subscribe to something — subscribe to (something) to agree with or support an opinion, belief, or theory. I subscribe to the notion of lying down when the urge to exercise strikes me … New idioms dictionary
subscribe to — (something) to agree with or support an opinion, belief, or theory. I subscribe to the notion of lying down when the urge to exercise strikes me … New idioms dictionary
subscribe — [v1] pay for use; contribute advocate, ante up*, buy, chip in*, come through*, consent, donate, do one’s part*, endorse, enroll, give, grant, ink*, make a deal*, offer, pitch in*, pledge, promise, put up*, register, second, set, sign, signature,… … New thesaurus
subscribe — [səb skrīb′] vt. subscribed, subscribing [ME subscriben < L subscribere: see SUB & SCRIBE] 1. to sign (one s name) at the end of a document, etc. 2. to write one s signature on (a document, etc.) as an indication of consent, approval,… … English World dictionary
subscribe to
1 subscribe
to subscribe to подпи́сываться на (газеты, журналы и т.п.)
2 subscribe
3 subscribe
4 subscribe
5 subscribe
6 subscribe
He subscribes regularly to Amnesty International. — Он регулярно жертвует деньги Международной Амнистии.
They subscribed for a large number of shares. — Они подписались на большое количество акций.
I was unwilling to subscribe to the contract, but it seemed that I had no choice. — Я не хотела подписывать контракт, но, кажется, другого выхода у меня не было.
to subscribe to an opinion — разделять чьё-л. мнение
Only mad people would subscribe to such views. — Только сумасшедшие могут разделять эту точку зрения.
7 subscribe
8 subscribe
подписывать(ся), приобретать по подписке
подписывать(ся) (под чем-л.)
приобретать по подписке
присоединяться (к чьему-л. мнению;
to)
to подписываться на (газеты, журналы и т. п.)
to a newspaper подписываться на газету
to an opinion соглашаться с мнением
9 subscribe
he subscribed £400 to the campaign — он пожертвовал на кампанию £400
to subscribe for [to\] shares — подписываться на акции
to subscribe one’s name to a document — подписать документ, поставить свою подпись под документом
10 subscribe to
1. I subscribe to several newspapers. 2. I won’t subscribe to your opinion. He refused to subscribe to their plan.
11 subscribe
12 subscribe
13 subscribe
14 subscribe to
15 subscribe
16 subscribe
17 subscribe
to subscribe one’s name to a document — подписать документ, поставить свою подпись под документом
18 subscribe
19 subscribe
subscribe to a magazine — подписа́ться на журна́л
20 subscribe
См. также в других словарях:
subscribe — sub‧scribe [səbˈskraɪb] verb 1. [intransitive] to pay money regularly in order to have a newspaper or magazine sent to you, or to receive a broadcasting, telephone, or Internet service: subscribe to • Which Internet Service Provider do you… … Financial and business terms
subscribe — sub·scribe /səb skrīb/ vb sub·scribed, sub·scrib·ing [Latin subscribere, literally, to write beneath, from sub under + scribere to write] vt 1: to write (one s name) underneath or at the end of a document we now subscribe our names as witnesses W … Law dictionary
Subscribe.ru — Subscribe.ru … Википедия
subscribe to — arrange to receive something, especially a periodical, regularly by paying in advance. → subscribe subscribe to feel agreement with (an idea or proposal). → subscribe … English new terms dictionary
subscribe — ► VERB 1) (often subscribe to) arrange to receive something, especially a periodical regularly by paying in advance. 2) (subscribe to) contribute (a sum of money) to a project or cause. 3) apply to participate in. 4) (subscribe to) express… … English terms dictionary
subscribe to — (something) to agree with or support an opinion, belief, or theory. I subscribe to the notion of lying down when the urge to exercise strikes me … New idioms dictionary
subscribe — [v1] pay for use; contribute advocate, ante up*, buy, chip in*, come through*, consent, donate, do one’s part*, endorse, enroll, give, grant, ink*, make a deal*, offer, pitch in*, pledge, promise, put up*, register, second, set, sign, signature,… … New thesaurus
subscribe — [səb skrīb′] vt. subscribed, subscribing [ME subscriben < L subscribere: see SUB & SCRIBE] 1. to sign (one s name) at the end of a document, etc. 2. to write one s signature on (a document, etc.) as an indication of consent, approval,… … English World dictionary
subscribe to — index abide, accede (concede), advocate, agree (comply), assent, assure (insure) … Law dictionary