Параметр DisplayIndex для DataGridColumn с заголовком "<var>X</var>" выходит за разрешенный диапазон. DisplayIndex должен быть больше или равен 0 и меньше, чем Columns.Count.

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The DisplayIndex for the DataGridColumn with Header '<var>X</var>' is out of range. DisplayIndex must be greater than or equal to 0 and less than Columns.Count.

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