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public bool DataTableCompare(DataTable dt1, DataTable dt2, List<string> filter)
{
    if (dt1 == null && dt2 != null) { return false; }
    if (dt1 != null && dt2 == null) { return false; }
    if (dt1 == null && dt2 == null) { return true; }
    if (dt1.Rows.Count != dt2.Rows.Count) { return false; }
    for (int rowIndex = 0; rowIndex < dt2.Rows.Count; rowIndex++)
    {
        for (int colIndex = 0; colIndex < dt2.Columns.Count; colIndex++)
        {
            // 指定したタイトルは比較の対象から外します。
            if (filter.Contains(dt1.Columns[colIndex].Caption))
            {
                continue;
            }
            if (!dt1.Rows[rowIndex][colIndex].Equals(
                dt2.Rows[rowIndex][colIndex]))
            {
                return false;
            }
        }
    }
    return true;
}