> 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.core/interfaces/wisej.core.iwisejdatastore.md).

# IWisejDataStore

Namespace: **Wisej.Core**

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

All wisej data stores implement this interface.

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

```csharp
public interface IWisejDataStore
```

{% endtab %}

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

```visual-basic
Public Interface IWisejDataStore
```

{% endtab %}
{% endtabs %}

## Methods

### ![](/files/hsR4ok3152WyAf8J2C1u) OnDataCount()

Returns the number of available records.

**Returns:** [Int32](https://docs.microsoft.com/dotnet/api/system.int32). The total number of rows.

### ![](/files/hsR4ok3152WyAf8J2C1u) OnDataRead(data)

Returns a data object.

| Parameter | Type                                                          | Description                                                                                                                                                                                                               |
| --------- | ------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **data**  | [Object](https://docs.microsoft.com/dotnet/api/system.object) | Request parameters. The parameters depend on the data consumer. For example, the [DataGridView](/api/wisej.web/lists-and-grids/datagridview.md) control uses: first, last, sortIndex, and sortDirection("asc" or "desc"). |

**Returns:** [Object](https://docs.microsoft.com/dotnet/api/system.object). An object that contains the data requested by the component.

## Implemented By

| Name                                                           | Description                                                                                                                   |
| -------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
| [DataGridView](/api/wisej.web/lists-and-grids/datagridview.md) | Represents a data grid control.                                                                                               |
| [ListView](/api/wisej.web/lists-and-grids/listview.md)         | Represents a list view control, which displays a collection of items that can be displayed using one of four different views. |


---

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