public class LTZMaskedEditingControl : DevExpress.XtraEditors.TextEdit, IDataGridViewEditingControl
{
    DataGridView dataGridView;
    private bool valueChanged = false;
    int rowIndex;

    public LTZMaskedEditingControl() 
    {
        this.Properties.Mask.UseMaskAsDisplayFormat = true;
        this.Properties.Mask.EditMask = "f";
        this.Properties.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.Numeric;
        this.BorderStyle = DevExpress.XtraEditors.Controls.BorderStyles.NoBorder;
    }

    public void ApplyCellStyleToEditingControl(DataGridViewCellStyle dataGridViewCellStyle)
    {
        this.Font = dataGridViewCellStyle.Font;
    }

    public DataGridView EditingControlDataGridView
    {
        get
        {
            return dataGridView;
        }
        set
        {
            dataGridView = value;
        }
    }

    public object EditingControlFormattedValue
    { 
        get
        {
            return this.Text;
        }
        set
        {
            this.Text = value.ToString();   
        }
    }

    public int EditingControlRowIndex
    {
        get
        {
            return rowIndex;
        }
        set
        {
            rowIndex = value;
        }
    }

    public bool EditingControlValueChanged
    {
        get
        {
            return valueChanged;
        }
        set
        {
            valueChanged = value;
        }
    }

    public bool EditingControlWantsInputKey(Keys keyData, bool dataGridViewWantsInputKey)
    {
        return !dataGridViewWantsInputKey;
    }

    public Cursor EditingPanelCursor
    {
        get
        {
            return base.Cursor;
        }
    }

    public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
    {
        return EditingControlFormattedValue;
    }

    public void PrepareEditingControlForEdit(bool selectAll)
    {
        
    }

    public bool RepositionEditingControlOnValueChange
    {
        get
        {
            return false;
        }
    }

    protected override void OnTextChanged(EventArgs eventargs)
    {
        valueChanged = true;
        this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
        base.OnTextChanged(eventargs);
    }

}