Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "EmbedYoutube" and then click OK
Step 2: Design your form as below

Step 3: Add code to handle your form as below
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace EmbedYoutube
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string _ytUrl;
//Get video id
public string VideoId
{
get
{
var ytMatch = new Regex(@"youtu(?:\.be|be\.com)/(?:.*v(?:/|=)|(?:.*/)?)([a-zA-Z0-9-_]+)").Match(_ytUrl);
return ytMatch.Success ? ytMatch.Groups[1].Value : string.Empty;
}
}
private void btnGo_Click(object sender, EventArgs e)
{
_ytUrl = txtUrl.Text;
webBrowser.Navigate($"http://youtube.com/v/{VideoId}?version=3");
}
}
}
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