VAGSuite.MapViewerEx.gridView1_ValidatingEditor C# (CSharp) Method

        private void gridView1_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e)
        {
            if (m_issixteenbit)
            {
                if (m_viewtype == ViewType.Hexadecimal)
                {
                    try
                    {
                        int value = Convert.ToInt32(Convert.ToString(e.Value), 16);
                        if (value > 0xFFFF)
                        {
                            e.Valid = false;
                            e.ErrorText = "Value not valid...";
                        }
                    }
                    catch (Exception hE)
                    {
                        e.Valid = false;
                        e.ErrorText = hE.Message;
                    }
                    /*value = 0xFFFF;
                     e.Value = value.ToString("X4");*/
                }
                else
                {
                    double dvalue = Convert.ToDouble(e.Value);
                    int value = 0;
                    if (m_viewtype == ViewType.Easy)
                    {
                        if (gridView1.ActiveEditor != null)
                        {
                            if (gridView1.ActiveEditor.EditValue.ToString() != gridView1.ActiveEditor.OldEditValue.ToString())
                            {
                                Console.WriteLine(gridView1.ActiveEditor.IsModified.ToString());
                                dvalue = Convert.ToDouble(gridView1.ActiveEditor.EditValue);
                                value = Convert.ToInt32((dvalue - correction_offset) / correction_factor);
            /*                                if(value < 0)
                                {
                                    value ^= 0xffffff;
                                    value = -value;
                                }*/
                            }
                            else
                            {
                                value = Convert.ToInt32(Convert.ToString(e.Value));
                            }
                        }
                        else
                        {
                            value = Convert.ToInt32(Convert.ToString(e.Value));
                        }
                    }
                    else
                    {
                        value = Convert.ToInt32(Convert.ToString(e.Value));
                    }
                    if (Math.Abs(value) > 78643)
                    {
                        e.Valid = false;
                        e.ErrorText = "Value not valid...";
                    }
                    else
                    {
                        e.Value = value;
                    }
                }

            }
            else
            {
                if (m_viewtype == ViewType.Hexadecimal)
                {
                    try
                    {
                        int value = Convert.ToInt32(Convert.ToString(e.Value), 16);
                        if (value > 0xFF)
                        {
                            e.Valid = false;
                            e.ErrorText = "Value not valid...";
                        }
                    }
                    catch(Exception hE)
                    {
                        e.Valid = false;
                        e.ErrorText = hE.Message;
                    }
                }
                else
                {
                    double dvalue = Convert.ToDouble(e.Value);
                    int value = 0;
                    if (m_viewtype == ViewType.Easy)
                    {
                        if (gridView1.ActiveEditor != null)
                        {
                            if (gridView1.ActiveEditor.EditValue.ToString() != gridView1.ActiveEditor.OldEditValue.ToString())
                            {
                                Console.WriteLine(gridView1.ActiveEditor.IsModified.ToString());
                                dvalue = Convert.ToDouble(gridView1.ActiveEditor.EditValue);
                                value = Convert.ToInt32((dvalue - correction_offset) / correction_factor);
                            }
                            else
                            {
                                value = Convert.ToInt32(Convert.ToString(e.Value));
                            }
                        }
                        else
                        {
                            value = Convert.ToInt32(Convert.ToString(e.Value));
                        }
                    }
                    else
                    {
                        value = Convert.ToInt32(Convert.ToString(e.Value));
                    }

                    if (value > 255)
                    {
                        e.Valid = false;
                        e.ErrorText = "Value not valid...";
                    }
                    else
                    {
                        e.Value = value;
                    }
                }
            }
        }