> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.ninjatrader.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ninjatrader.com/_mcp/server.

# DataType

## Definition

Determines the data type displayed in a Market Analyzer Column.

## Syntax

`DataType`

## Examples

```csharp
protected override void OnStateChange()
{
     if (State == State.SetDefaults)
     {
          DataType = typeof(string);
          IsEditable = true;
     }
}
```