# Add an Event

Once you have opened the designer and added a button, it's time to add a click event to the button. This even will be triggered whenever the user clicks on the button.

There are two ways to add this:

1. By double-clicking on the button
2. By selecting the button, clicking on the event (lightning bolt) icon, and double-clicking on the click event

Either way, you will end up with the Page1.cs file open and the following code:

```csharp
private void button1_Click(object sender, System.EventArgs e)
{

}
```

This is the function that is called whenever the button is clicked. We can add some code so that an Alertbox is displayed whenever the user clicks the button:

```csharp
private void button1_Click(object sender, System.EventArgs e)
{
    AlertBox.Show("Button Clicked");
}
```

Run the program by clicking on this button at the top of Visual Studio:

<figure><img src="/files/5eWxsIK60yrabzBoZYtq" alt=""><figcaption></figcaption></figure>

Note that if you click on the dropdown menu, there are several options you can change:

You can change the web browser to Firefox, Google Chrome or Microsoft Edge

<figure><img src="/files/s8UoodEBLBhq4YfhMbjt" alt=""><figcaption></figcaption></figure>

You can change the framework that the project is running on

<figure><img src="/files/ymxFsyT0oYDncDnDdAlm" alt=""><figcaption></figcaption></figure>

Once the program is running, click the button. It will look like this:

<figure><img src="/files/FbWd4E1WRCvMF4I0B0QD" alt=""><figcaption></figcaption></figure>

Note that by default, the url will be localhost:5000 when running from Visual Studio


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