IfcDoc.CtlParameters.dataGridViewConceptRules_CellEnter C# (CSharp) Method

        private void dataGridViewConceptRules_CellEnter(object sender, DataGridViewCellEventArgs e)
        {
            if (this.m_columns == null)
                return;

            if (e.ColumnIndex >= 0 && e.ColumnIndex < this.m_columns.Length)
            {
                this.m_selectedcolumn = this.m_columns[e.ColumnIndex];
            }
            else
            {
                this.m_selectedcolumn = null;
            }

            if (this.SelectedColumnChanged != null)
            {
                this.SelectedColumnChanged(this, EventArgs.Empty);
            }
        }