使用大型emSize绘制的某些西里尔符号的DrawString错误

Question

我有一个非常简单的应用程序，在位图上打印一个大的西里尔符号。西里尔字母有33个字母，其中31个正确打印，但字母'Э'和'Я'（代码为1069 (see here)和1071 (see here)）抛出'GDI +中发生一般错误。'

堆栈跟踪：

   in System.Drawing.Graphics.CheckErrorStatus(Int32 status)    
   in System.Drawing.Graphics.DrawString(String s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format)  
   in System.Drawing.Graphics.DrawString(String s, Font font, Brush brush, Single x, Single y)  
   in textTest.Form1.Form1_Load(Object sender, EventArgs e) in w:\Delete\textTest\textTest\Form1.cs:line 27  

代码：

private void Form1_Load(object sender, EventArgs e)
        {
            Bitmap bmp = new Bitmap(1000, 2000);
            using (Graphics g = Graphics.FromImage(bmp))
            {
                try
                {
                    g.DrawString((char)1069+"", new Font("Times New Roman", 100f, FontStyle.Regular), Brushes.White, 100, 100);
                }
                catch (Exception ex)
                {

                }
            }
        }