.Net Solution

//設定從Wpf中設定FontDialog的屬性FontDialog fd = new FontDialog();

                fd.ShowColor = true;
                fd.ShowEffects = true;
                fd.FontMustExist = true;
                System.Drawing.FontStyle style = new System.Drawing.FontStyle();     

              

                if (TBx_writeinfo.FontWeight.ToString() == "Bold")
                {
                     if (TBx_writeinfo.FontStyle.ToString() == "Italic")
                    {
                         try
                        {
                            style = (System.Drawing.FontStyle)new FontStyleConverter().ConvertFromString("Bold, Italic");
                        }
                        catch (Exception)
                        {

                            ////Console.WriteLine("ex:" + ex.Message);
                        }

                    }
                    else
                    {
                        ////Console.WriteLine("not italic");
                        style = System.Drawing.FontStyle.Bold;
                    }

                }
                else
                {
                    ////Console.WriteLine("not bold");
                    if (TBx_writeinfo.FontStyle.ToString() == "Italic")
                    {
                        ////Console.WriteLine("italic");
                        style = System.Drawing.FontStyle.Italic;
                    }
                    else
                    {
                        ////Console.WriteLine("not italic");
                    }
                }

                fd.Color = (System.Drawing.Color)new System.Drawing.ColorConverter().ConvertFromString(TBx_writeinfo.Foreground.ToString());
                //TODO:取得刪除線
                Console.WriteLine("MyTextDecoration:" + MyTextDecoration);
              
                if (MyTextDecoration != null)
                {
                    string[] temp = MyTextDecoration.Split('-');
                    if (temp != null)
                    {
                        for (int i = 0; i < temp.Length; i++)
                        {
                            if (!String.IsNullOrEmpty(temp[i]))
                            {
                                if (temp[i] == "Strikethrough")
                                {
                                    style |= System.Drawing.FontStyle.Strikeout;
                                }
                                else if (temp[i] == "Underline")
                                {
                                    style |= System.Drawing.FontStyle.Underline;
                                }
                            }
                        }
                    }
                }
                //TODO:取得底線

                fd.Font = new System.Drawing.Font(TBx_writeinfo.FontFamily.ToString(), (float)TBx_writeinfo.FontSize, style);

 

//從FontDialog屬性中，設定Wpf元件屬性(textblock)

DialogResult dr = fd.ShowDialog();

                //Console.WriteLine("dr:" + dr.ToString());
                if (dr.ToString() == "OK")
                {
                    ////Console.WriteLine("ok");
                    ////Console.WriteLine("family:" + fd.Font.FontFamily);
                    ////Console.WriteLine("style:" + fd.Font.Style);
                    ////Console.WriteLine("size:" + fd.Font.Size);
                    ////Console.WriteLine("Strikeout:" + fd.Font.Strikeout);
                    ////Console.WriteLine("underline:" + fd.Font.Underline);
                    ////Console.WriteLine("bold:" + fd.Font.Bold);
                    ////Console.WriteLine("italic:" + fd.Font.Italic);
                    ////Console.WriteLine("color:" + fd.Color.Name);
                    ////Console.WriteLine("charset:" + fd.Font.GdiCharSet);

                    //TODO:設定變更的字型樣式
                    TBx_writeinfo.FontFamily = new FontFamily(fd.Font.FontFamily.Name);
                    MyFontFamily = new FontFamily(fd.Font.FontFamily.Name);
                    TBx_writeinfo.FontSize = fd.Font.Size;
                    MyFontSize = fd.Font.Size;
                    //TBx_writeinfo.FontWeight = fd.Font.Bold.
                    ////Console.WriteLine("fontfamily:" + TBx_writeinfo.FontFamily);
                    ////Console.WriteLine("style:" + TBx_writeinfo.FontStyle);
                    ////Console.WriteLine("fontweight:" + TBx_writeinfo.FontWeight);

                    if (fd.Font.Bold)
                    {
                        TBx_writeinfo.FontWeight = FontWeights.Bold;
                        MyFontWeight = FontWeights.Bold;
                    }
                    else
                    {
                        TBx_writeinfo.FontWeight = FontWeights.Normal;
                        MyFontWeight = FontWeights.Normal;
                    }
                    if (fd.Font.Italic)
                    {
                        TBx_writeinfo.FontStyle = FontStyles.Italic;
                        MyFontStyle = FontStyles.Italic;
                    }
                    else
                    {
                        TBx_writeinfo.FontStyle = FontStyles.Normal;
                        MyFontStyle = FontStyles.Normal;
                    }

                    string sendTextDecoration = "";
                    MyTextDecoration = null;
                    TBx_writeinfo.TextDecorations = null;
                    if (fd.Font.Strikeout == true && fd.Font.Underline == true)
                    {
                        //設定underline
                        TextDecorationCollection myCollection = new TextDecorationCollection();
                        TextDecoration myUnderline = new TextDecoration();
                        myUnderline.Location = TextDecorationLocation.Underline;

                        // Set the solid color brush.
                        myUnderline.Pen = new Pen((Brush)new BrushConverter().ConvertFromString(fd.Color.Name), 1);
                        myUnderline.PenThicknessUnit = TextDecorationUnit.FontRecommended;

                        // Set the underline decoration to the text block.
                        myCollection.Add(myUnderline);

                        //設定Strikethrough;
                        //TextDecorationCollection myCollection = new TextDecorationCollection();
                        TextDecoration myStrikeThrough = new TextDecoration();
                        myStrikeThrough.Location = TextDecorationLocation.Strikethrough;

                        // Set the solid color brush.
                        myStrikeThrough.Pen = new Pen((Brush)new BrushConverter().ConvertFromString(fd.Color.Name), 1);
                        myStrikeThrough.PenThicknessUnit = TextDecorationUnit.FontRecommended;

                        // Set the underline decoration to the text block.
                        myCollection.Add(myStrikeThrough);
                        //TBx_writeinfo.TextDecorations = TextDecorations.Underline || TextDecorations.Strikethrough;
                        TBx_writeinfo.TextDecorations = myCollection;
                        MyTextDecoration = "Strikethrough-Underline";
                        sendTextDecoration = "Strikethrough-Underline";
                    }
                    else
                    {
                        if (fd.Font.Strikeout)
                        {
                            TBx_writeinfo.TextDecorations = TextDecorations.Strikethrough;
                            MyTextDecoration = "Strikethrough";
                            sendTextDecoration = "Strikethrough";
                        }
                        if (fd.Font.Underline)
                        {
                            TBx_writeinfo.TextDecorations = TextDecorations.Underline;
                            MyTextDecoration = "Underline";
                            sendTextDecoration = "Underline";
                        }
                    }
                    TBx_writeinfo.Foreground = (Brush)new BrushConverter().ConvertFromString(fd.Color.Name);
                    MyColor = fd.Color.Name;