System.Data.DataRow.CheckForLoops C# (CSharp) Method

        internal void CheckForLoops(DataRelation rel)
        {
            // don't check for loops in the diffgram
            // because there may be some holes in the rowCollection
            // and index creation may fail. The check will be done
            // after all the loading is done _and_ we are sure there
            // are no holes in the collection.
            if (_table._fInLoadDiffgram || (_table.DataSet != null && _table.DataSet._fInLoadDiffgram))
            {
                return;
            }

            int count = _table.Rows.Count, i = 0;
            // need to optimize this for count > 100
            DataRow parent = GetParentRow(rel);
            while (parent != null)
            {
                if ((parent == this) || (i > count))
                {
                    throw ExceptionBuilder.NestedCircular(_table.TableName);
                }
                i++;
                parent = parent.GetParentRow(rel);
            }
        }