How to check if BUTTON is clicked in C# Winforms to the JAVA SCRIPT code? With the use of webbrowser

this.buttonNW.Click += new System.EventHandler(this.button_Click);
this.buttonN.Click += new System.EventHandler(this.button_Click);
this.buttonNE.Click += new System.EventHandler(this.button_Click);


// in the form code:
private void button_Click(object sender, EventArgs e) {
    Button thisButton = (Button)sender;

    switch (thisButton.Name) {
        case "buttonNW":
            MessageBox.Show("North West button clicked");
            break;
        case "buttonN":
            MessageBox.Show("Northern button clicked");
            break;
        case "buttonNE":
            MessageBox.Show("North East button clicked");
            break;
    }