void InitOpenFileName()
{
Openofn = new OpenFileName();
Openofn.structSize = Marshal.SizeOf(Openofn);
Openofn.filter = "图片文件或PDF文件(*.jpg;*.png;*.pdf)\0*.jpg;*.png;*.pdf\0";
Openofn.file = new string(new char[1024]);
Openofn.maxFile = Openofn.file.Length;
Openofn.fileTitle = new string(new char[64]);
Openofn.maxFileTitle = Openofn.fileTitle.Length;
Openofn.initialDir = "C:\\";
Openofn.title = "选择图片或PDF文件";
Openofn.defExt = "PDF";
Openofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008; //OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR
Saveofn = new OpenFileName();
Saveofn.structSize = Marshal.SizeOf(Saveofn);
Saveofn.filter = "word文件(*.doc;*.docx)\0*.doc;*.docx\0";
Saveofn.file = new string(new char[1024]);
Saveofn.maxFile = Saveofn.file.Length;
Saveofn.fileTitle = new string(new char[64]);
Saveofn.maxFileTitle = Saveofn.fileTitle.Length;
Saveofn.initialDir = "C:\\";
Saveofn.title = "保存word文件";
Saveofn.defExt = "WORD";
Saveofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008; //OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST|OFN_NOCHANGEDIR
}