Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace HL2_Cinematic_Mod_Launcher
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public void Form1_Load(object sender, EventArgs e)
        {
        }

        void InitializeComponents()
        {
            this.button1 = (new System.Windows.Forms.Button());
            this.button2 = (new System.Windows.Forms.Button());
            this.button3 = (new System.Windows.Forms.Button());
            this.button4 = (new System.Windows.Forms.Button());
            this.SuspendLayout();
            ///
            /// FORM
            ///
            this.Controls.Add(this.button1);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button4);
            this.Name = "Form1";
            this.Text = "Launcher";
            this.Load += new System.EventHandler(Form1_Load);
            this.ResumeLayout(false);
            this.PerformLayout();
            ///
            /// BUTTON 1
            ///
            this.button1.Text = "Configurator";
            this.button1.UseVisualStyleBackColor = false;
            this.button1.Click += new System.EventHandler(button1_Click);
            ///
            /// BUTTON 2
            ///
            this.button2.Text = "Half-Life 2";
            this.button2.UseVisualStyleBackColor = false;
            this.button2.Click += new System.EventHandler(button2_Click);
            ///
            /// BUTTON 3
            ///
            this.button3.Text = "Half-Life 2: Episode One";
            this.button3.UseVisualStyleBackColor = false;
            this.button3.Click += new System.EventHandler(button3_Click);
            ///
            /// BUTTON 4
            ///
            this.button4.Text = "Half-Life 2: Episode Two";
            this.button4.UseVisualStyleBackColor = false;
            this.button4.Click += new System.EventHandler(button4_Click);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string myDir = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
            string gameDir = Path.Combine(myDir, "E:\\Steam Games\\SteamApps\\common\\CM2013");
            string gameExe = Path.Combine(gameDir, "Configurator.EXE");
            Process proc1 = new Process();
            proc1.StartInfo.FileName = gameExe;
            proc1.StartInfo.WorkingDirectory = gameDir;
            proc1.SynchronizingObject = this;
            proc1.EnableRaisingEvents = true;
            proc1.Start();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            string myDir = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
            string gameDir = Path.Combine(myDir, "E:\\Steam Games\\SteamApps\\common\\CM2013");
            string gameExe = Path.Combine(gameDir, "Launcher_EP0.exe");
            Process proc2 = new Process();
            proc2.StartInfo.FileName = gameExe;
            proc2.StartInfo.WorkingDirectory = gameDir;
            proc2.SynchronizingObject = this;
            proc2.EnableRaisingEvents = true;
            proc2.Start();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            string myDir = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
            string gameDir = Path.Combine(myDir, "E:\\Steam Games\\SteamApps\\common\\CM2013");
            string gameExe = Path.Combine(gameDir, "launcher_EP1.exe");
            Process proc3 = new Process();
            proc3.StartInfo.FileName = gameExe;
            proc3.StartInfo.WorkingDirectory = gameDir;
            proc3.SynchronizingObject = this;
            proc3.EnableRaisingEvents = true;
            proc3.Start();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            string myDir = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
            string gameDir = Path.Combine(myDir, "E:\\Steam Games\\SteamApps\\common\\CM2013");
            string gameExe = Path.Combine(gameDir, "Launcher_EP2.exe");
            Process proc4 = new Process();
            proc4.StartInfo.FileName = gameExe;
            proc4.StartInfo.WorkingDirectory = gameDir;
            proc4.SynchronizingObject = this;
            proc4.EnableRaisingEvents = true;
            proc4.Start();
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}