/// <summary>Gets the <see cref="Column"/> by specified <see cref="ColumnId"/>.</summary>
/// <param name="columnId">The <see cref="ColumnId"/> which uniquely identifies the column.</param>
/// <returns>Column with the specified <see cref="ColumnId"/>, <see langword="null"/> if no column found.</returns>
public Column this[ColumnId columnId]
{
get
{
var result = this[columnId.Name];
return(result != null && result.DeclaringType == columnId.DeclaringType ? result : null);
}
}
/// <summary>Gets the <see cref="Column"/> by specified <see cref="ColumnId"/>.</summary>
/// <param name="columnKey">The <see cref="ColumnId"/> which uniquely identifies the column.</param>
/// <returns>Column with the specified <see cref="ColumnId"/>, <see langword="null"/> if no column found.</returns>
public Column this[ColumnId columnKey]
{
get
{
var columns = Columns;
return(columns.Contains(columnKey) ? columns[columnKey] : null);
}
}
private static Column GetColumnByOriginalId(IReadOnlyDictionary <ColumnId, IColumns> columnsByOriginalId, ColumnId originalId)
{
if (columnsByOriginalId.TryGetValue(originalId, out var columns))
{
if (columns.Count == 1)
{
return(columns.Single());
}
}
return(null);
}
