# DataGridCustomColumnSortEventArgsBase<T>.SourceItemIndex1 property

Gets the index of the first compared data source item.

```csharp
public int SourceItemIndex1 { get; }
```

## See Also

* class [DataGridCustomColumnSortEventArgsBase<T>](../DataGridCustomColumnSortEventArgsBase-T.md)
* namespace [Eremex.AvaloniaUI.Controls.DataGrid](../index.md)

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