DevExpress GridView GetSelectedSurrogates Extension

Extensions.cs

/// <summary>
/// It is the method that returns the selected data in generic type 
/// using the repository view in all Devexpress components that can make selections.
/// </summary>
/// <typeparam name="T">Surrogate Type</typeparam>
/// <param name="gridView">Repository view on component</param>
/// <returns></returns>
public static IEnumerable<T> GetSelectedSurrogates<T>(this GridView gridView) where T : class
{
    if (gridView.SelectedRowsCount > 0)
    {
        var selectedRowHandles = gridView.GetSelectedRows();
        IList<T> selectedSurrogates = [];
        foreach (var rowHandle in selectedRowHandles)
        {
            var surrogate = gridView.GetRow(rowHandle) as T;
            selectedSurrogates.Add(surrogate);
        }

        return selectedSurrogates;
    }
    else
    {
        return Enumerable.Empty<T>();
    }
}



/// <summary>
/// It is the method that returns the selected data in generic type 
/// using the repository view in all Devexpress components that can make selection.
/// </summary>
/// <typeparam name="T">Surrogate Type</typeparam>
/// <param name="gridView">Repository view on component</param>
/// <returns></returns>
public static T GetSelectedFirstOrDefaultSurrogate<T>(this GridView gridView) where T : class
{
    var selectedRowHandle = gridView.GetSelectedRows().FirstOrDefault();
    if (selectedRowHandle >= 0)
    {
        return gridView.GetRow(selectedRowHandle) as T;
    }
    else
    {
        return default;
    }
}

Usage.cs

// MULTI SELECT
private void SLUE_PrintersLocations_CloseUp(object sender, DevExpress.XtraEditors.Controls.CloseUpEventArgs e)
{
    IEnumerable<SaleLocationSurrogate> selectedSaleLocationSurrogates = SLUEV_PrintersLocations.GetSelectedSurrogates<SaleLocationSurrogate>();
    SelectedItems = selectedSaleLocationSurrogates;
}

public IEnumerable<SaleLocationSurrogate> SelectedItems { get; set; }


// SINGLE ITEM
private void SLUE_PrintersLocations_CloseUp(object sender, DevExpress.XtraEditors.Controls.CloseUpEventArgs e)
{
    SelectedItem = SLUEV_PrintersLocations.GetSelectedFirstOrDefaultSurrogate<SaleLocationSurrogate>();
}

public SaleLocationSurrogate SelectedItem { get; set; }