> For the complete documentation index, see [llms.txt](https://docs.wisej.com/api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wisej.com/api/wisej.web/general/control/wisej.web.mouseeventhandler.md).

# MouseEventHandler

Namespace: **Wisej.Web**

Assembly: **Wisej.Framework** (4.0.0.0)

Represents the method that will handle the MouseDown, MouseUp, or MouseMove event of a form, control, or other component.

{% tabs %}
{% tab title="C#" %}

```csharp
public delegate void MouseEventHandler(Object sender, MouseEventArgs e)
```

{% endtab %}

{% tab title="VB.NET" %}

```visual-basic
Public Delegate Sub MouseEventHandler(ByVal sender As [Object], ByVal e As MouseEventArgs)
```

{% endtab %}
{% endtabs %}

## Parameters

| Name       | Type                                                                         | Description                                                                                                  |
| ---------- | ---------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| **sender** | [Object](https://docs.microsoft.com/dotnet/api/system.object)                | The source of the event.                                                                                     |
| **e**      | [MouseEventArgs](/api/wisej.web/general/control/wisej.web.mouseeventargs.md) | A [MouseEventArgs](/api/wisej.web/general/control/wisej.web.mouseeventargs.md) that contains the event data. |

## Fired By

| Name                                                                                     | Description                                                                                                               |
| ---------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- |
| [CheckedListBox.MouseClick](/api/wisej.web/lists-and-grids/checkedlistbox.md#mouseclick) | Fired when the user clicks the [CheckedListBox](/api/wisej.web/lists-and-grids/checkedlistbox.md) control with the mouse. |
| [Control.MouseClick](/api/wisej.web/general/control.md#mouseclick)                       | Fired when the control is clicked by the mouse.                                                                           |
| [Control.MouseDoubleClick](/api/wisej.web/general/control.md#mousedoubleclick)           | Fired when the control is double clicked by the mouse.                                                                    |
| [Control.MouseDown](/api/wisej.web/general/control.md#mousedown)                         | Fired when the mouse pointer is over the control and a mouse button is pressed.                                           |
| [Control.MouseMove](/api/wisej.web/general/control.md#mousemove)                         | Fired when the mouse pointer is moved over the control.                                                                   |
| [Control.MouseUp](/api/wisej.web/general/control.md#mouseup)                             | Fired when the mouse pointer is over the control and a mouse button is released.                                          |
| [Control.MouseWheel](/api/wisej.web/general/control.md#mousewheel)                       | Fired when the mouse wheel moves while the control has focus.                                                             |


---

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