# DataGridView\.CustomSummary

Namespace: **Wisej.Web**

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

Represents a [Custom](https://docs.wisej.com/api/wisej.web/lists-and-grids/wisej.web.summarytype#fields) summary function.

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

```csharp
public delegate void CustomSummary(DataGridViewRow[] group, DataGridViewColumn summaryColumn)
```

{% endtab %}

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

```visual-basic
Public Delegate Sub CustomSummary(ByVal group()
```

{% endtab %}
{% endtabs %}

## Parameters

| Name              | Type                                                                                                                 | Description                                                                                                                                           |
| ----------------- | -------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- |
| **group**         | [DataGridViewRow\[\]](https://docs.wisej.com/api/wisej.web/lists-and-grids/datagridview/wisej.web.datagridviewrow)   | Array of [DataGridViewRow](https://docs.wisej.com/api/wisej.web/lists-and-grids/datagridview/wisej.web.datagridviewrow) in the group to summarize.    |
| **summaryColumn** | [DataGridViewColumn](https://docs.wisej.com/api/wisej.web/lists-and-grids/datagridview/wisej.web.datagridviewcolumn) | The [DataGridViewColumn](https://docs.wisej.com/api/wisej.web/lists-and-grids/datagridview/wisej.web.datagridviewcolumn) to calculate the summary on. |