private void dgvEmployee_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs eventArgs)
        {
            DataGridViewColumn currentColumn = eventArgs.Column;
            int columnWidth = currentColumn.Width;
            int columnWidthDifference = (currentColumn.HeaderCell.SortGlyphDirection
                                            != System.Windows.Forms.SortOrder.None) ? 26 : 10;
            string continueOperator = "...";
            string columnName = currentColumn.Name;
            string headerWithSingleChar = columnName.Substring(0, 1) + continueOperator;
            string headerText;

            int charRemove = 2;
            while (currentColumn.HeaderCell.ContentBounds.Width > columnWidth - columnWidthDifference)
            {
                if (columnName.Length != charRemove)
                {
                    headerText = columnName.Substring(0, (columnName.Length - charRemove)) + continueOperator;
                    SetColumnHeader(currentColumn, headerText);
                }
                else
                {
                    headerText = (columnWidthDifference != 10) ? string.Empty : headerWithSingleChar;
                    SetColumnHeader(currentColumn, headerText);
                    return;
                }

                charRemove++;
            }

            int charShow = 1;
            while (currentColumn.HeaderCell.ContentBounds.Width < columnWidth - columnWidthDifference)
            {
                if (columnName.Length != charShow)
                {
                    headerText = columnName.Substring(0, charShow) + continueOperator;
                    SetColumnHeader(currentColumn, headerText);
                }
                else
                {
                    SetColumnHeader(currentColumn, columnName);
                    return;
                }

                if (currentColumn.HeaderCell.ContentBounds.Width > columnWidth - columnWidthDifference)
                {
                    if (charShow != 1)
                    {
                        headerText = columnName.Substring(0, charShow - 1) + continueOperator;
                        SetColumnHeader(currentColumn, headerText);
                    }
                    else
                    {
                        headerText = (columnWidthDifference != 10) ? string.Empty : headerWithSingleChar;
                        SetColumnHeader(currentColumn, headerText);
                    }
                    return;
                }

                charShow++;
            }
        }

        private void SetColumnHeader(DataGridViewColumn currentColumn, string columnHeaderText)
        {
            dgvEmployee.CellValueChanged -= new DataGridViewCellEventHandler(dgvdgvEmployee_CellValueChanged);
            currentColumn.HeaderText = columnHeaderText;
            dgvEmployee.CellValueChanged += new DataGridViewCellEventHandler(dgvdgvEmployee_CellValueChanged);
        }