请牛人帮忙看一下代码哪里错了

               
 rgbBitmap是装载bmp图像数据部分的内容，此程序的目的是想把内存中的图像数据在pictureBox中显示。但是不知道为什么总是在倒数第二行出现一个这样的异常：

未处理的“System.ArgumentException”类型的异常出现在 system.drawing.dll 中。

其他信息: 使用了无效参数。            


             Image *myImage;
             MemoryStream *myStream;
     myStream=new MemoryStream;
     BinaryWriter *myWriter;
     myWriter=new BinaryWriter(myStream);



                myWriter->Write(bfType);
        myWriter->Write(bfsize);
  myWriter->Write(bfReserved1);
                myWriter->Write(bfReserved2);
myWriter->Write(bfOffBits);
myWriter->Write(bmpHdr.biBitCount);
myWriter->Writ(bmpHdr.biClrImportant);
        myWriter->Write(bmpHdr.biClrUsed);
myWriter->Write(bmpHdr.biCompression);
myWriter->Write(bmpHdr.biHeight);
myWriter->Write(bmpHdr.biPlanes);
myWriter->Write(bmpHdr.biSize);
myWriter->Write(bmpHdr.biSizeImage);
myWriter->Write(bmpHdr.biWidth);
myWriter->Write(bmpHdr.biXPelsPerMeter);
myWriter->Write(bmpHdr.biYPelsPerMeter);
for(j=0;j<KWidth*KHeight*3;j++)
{
 myWriter->Write(rgbBitmap[j]);
}
myImage= System::Drawing::Image::FromStream(myStream);
pictureBox1->Image=myImage;

小弟实在处理不了了，希望各位大哥大姐帮一下 --------------------编程问答-------------------- 学C++没这么深入 --------------------编程问答-------------------- myImage= System::Drawing::Image::FromStream(myStream); 
查看一下参数签名格式 --------------------编程问答-------------------- --------------------编程问答-------------------- 这个简单啊,网上搜一下就得到答案了. --------------------编程问答-------------------- 以后需再关注，现在先帮你顶一下

补充：.NET技术 ,  .NET Framework