\u5728.Net Framework SDK\u6587\u6863\u4e2d\uff0c\u5173\u4e8e\u8c03\u7528Windows API\u7684\u6307\u793a\u6bd4\u8f83\u96f6\u6563\uff0c\u5e76\u4e14\u5176\u4e2d\u7a0d\u5168\u9762\u4e00\u70b9\u7684\u662f\u9488\u5bf9Visual Basic .net\u8bb2\u8ff0\u7684\u3002\u672c\u6587\u5c06C#\u4e2d\u8c03\u7528API\u7684\u8981\u70b9\u6c47\u96c6\u5982\u4e0b\uff0c\u5e0c\u671b\u7ed9\u672a\u5728C#\u4e2d\u4f7f\u7528\u8fc7API\u7684\u670b\u53cb\u4e00\u70b9\u5e2e\u52a9\u3002\u53e6\u5916\u5982\u679c\u5b89\u88c5\u4e86Visual Studio .net\u7684\u8bdd\uff0c\u5728C:Program FilesMicrosoft Visual Studio .NETFrameworkSDKSamplesTechnologiesInteropPlatformInvokeWinAPIsCS \u76ee\u5f55\u4e0b\u6709\u5927\u91cf\u7684\u8c03\u7528API\u7684\u4f8b\u5b50\u3002<\/p>\n
\u4e00\u3001\u8c03\u7528\u683c\u5f0f<\/strong> DllImportAttribute\u7279\u6027\u7684\u516c\u5171\u5b57\u6bb5\u5982\u4e0b\uff1a<\/p>\n 1\u3001CallingConvention \u6307\u793a\u5411\u975e\u6258\u7ba1\u5b9e\u73b0\u4f20\u9012\u65b9\u6cd5\u53c2\u6570\u65f6\u6240\u7528\u7684CallingConvention \u503c\u3002<\/strong> 2\u3001CharSet \u63a7\u5236\u8c03\u7528\u51fd\u6570\u7684\u540d\u79f0\u7248\u672c\u53ca\u6307\u793a\u5982\u4f55\u5411\u65b9\u6cd5\u5c01\u9001 String \u53c2\u6570\u3002<\/strong> 3\u3001EntryPoint \u6307\u793a\u8981\u8c03\u7528\u7684 DLL \u5165\u53e3\u70b9\u7684\u540d\u79f0\u6216\u5e8f\u53f7\u3002<\/strong> 4\u3001ExactSpelling \u6307\u793a\u662f\u5426\u5e94\u4fee\u6539\u975e\u6258\u7ba1 DLL \u4e2d\u7684\u5165\u53e3\u70b9\u7684\u540d\u79f0\uff0c\u4ee5\u4e0e CharSet \u5b57\u6bb5\u4e2d\u6307\u5b9a\u7684 CharSet \u503c\u76f8\u5bf9\u5e94\u3002<\/strong> 5\u3001PreserveSig \u6307\u793a\u6258\u7ba1\u65b9\u6cd5\u7b7e\u540d\u4e0d\u5e94\u8f6c\u6362\u6210\u8fd4\u56de HRESULT\u3001\u5e76\u4e14\u53ef\u80fd\u6709\u4e00\u4e2a\u5bf9\u5e94\u4e8e\u8fd4\u56de\u503c\u7684\u9644\u52a0 [out, retval] \u53c2\u6570\u7684\u975e\u6258\u7ba1\u7b7e\u540d\u3002<\/strong><\/p>\n 6\u3001SetLastError \u6307\u793a\u88ab\u8c03\u7528\u65b9\u5728\u4ece\u5c5e\u6027\u5316\u65b9\u6cd5\u8fd4\u56de\u4e4b\u524d\u5c06\u8c03\u7528 Win32 API SetLastError\u3002<\/strong> \u4e8c\u3001\u53c2\u6570\u7c7b\u578b\uff1a<\/strong> 2\u3001API\u4e2d\u5b57\u7b26\u4e32\u6307\u9488\u7c7b\u578b -> .net\u4e2dstring<\/strong><\/p>\n 3\u3001API\u4e2d\u53e5\u67c4 (dWord) -> .net\u4e2dIntPtr<\/strong><\/p>\n 4\u3001API\u4e2d\u7ed3\u6784 -> .net\u4e2d\u7ed3\u6784\u6216\u8005\u7c7b\u3002<\/strong> \u4e09\u3001\u5982\u4f55\u4fdd\u8bc1\u4f7f\u7528\u6258\u7ba1\u5bf9\u8c61\u7684\u5e73\u53f0\u8c03\u7528\u6210\u529f\uff1f<\/strong> \u5728.Net Framework SDK\u6587\u6863\u4e2d\uff0c\u5173\u4e8e\u8c03\u7528Windows API\u7684\u6307\u793a\u6bd4\u8f83\u96f6\u6563\uff0c\u5e76\u4e14\u5176\u4e2d\u7a0d\u5168\u9762\u4e00\u70b9 … \u7ee7\u7eed\u9605\u8bfb\u201cC#\u4e2d\u8c03\u7528Windows API\u7684\u8981\u70b9\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-312","post","type-post","status-publish","format-standard","hentry","category-net"],"_links":{"self":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/312","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=312"}],"version-history":[{"count":0,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=\/wp\/v2\/posts\/312\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.axqd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nusing System.Runtime.InteropServices; \/\/\u5f15\u7528\u6b64\u540d\u79f0\u7a7a\u95f4\uff0c\u7b80\u5316\u540e\u9762\u7684\u4ee3\u7801
\n...
\n\/\/\u4f7f\u7528DllImportAttribute\u7279\u6027\u6765\u5f15\u5165api\u51fd\u6570\uff0c\u6ce8\u610f\u58f0\u660e\u7684\u662f\u7a7a\u65b9\u6cd5\uff0c\u5373\u65b9\u6cd5\u4f53\u4e3a\u7a7a\u3002
\n[DllImport(\"user32.dll\")]
\npublic static extern ReturnType FunctionName(type arg1,type arg2,...);
\n\/\/\u8c03\u7528\u65f6\u4e0e\u8c03\u7528\u5176\u4ed6\u65b9\u6cd5\u5e76\u65e0\u533a\u522b\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u6bb5\u8fdb\u4e00\u6b65\u8bf4\u660e\u7279\u6027\uff0c\u7528\u9017\u53f7\u9694\u5f00\uff0c\u5982\uff1a
\n[ DllImport( \"kernel32\", EntryPoint=\"GetVersionEx\" )]<\/code><\/p>\n
\nCallingConvention.Cdecl : \u8c03\u7528\u65b9\u6e05\u7406\u5806\u6808\u3002\u5b83\u4f7f\u60a8\u80fd\u591f\u8c03\u7528\u5177\u6709 varargs \u7684\u51fd\u6570\u3002
\nCallingConvention.StdCall : \u88ab\u8c03\u7528\u65b9\u6e05\u7406\u5806\u6808\u3002\u5b83\u662f\u4ece\u6258\u7ba1\u4ee3\u7801\u8c03\u7528\u975e\u6258\u7ba1\u51fd\u6570\u7684\u9ed8\u8ba4\u7ea6\u5b9a\u3002<\/p>\n
\n\u6b64\u5b57\u6bb5\u88ab\u8bbe\u7f6e\u4e3a CharSet \u503c\u4e4b\u4e00\u3002\u5982\u679c CharSet \u5b57\u6bb5\u8bbe\u7f6e\u4e3a Unicode\uff0c\u5219\u6240\u6709\u5b57\u7b26\u4e32\u53c2\u6570\u5728\u4f20\u9012\u5230\u975e\u6258\u7ba1\u5b9e\u73b0\u4e4b\u524d\u90fd\u8f6c\u6362\u6210 Unicode \u5b57\u7b26\u3002\u8fd9\u8fd8\u5bfc\u81f4\u5411 DLL EntryPoint \u7684\u540d\u79f0\u4e2d\u8ffd\u52a0\u5b57\u6bcd\u201cW\u201d\u3002\u5982\u679c\u6b64\u5b57\u6bb5\u8bbe\u7f6e\u4e3a Ansi\uff0c\u5219\u5b57\u7b26\u4e32\u5c06\u8f6c\u6362\u6210 ANSI \u5b57\u7b26\u4e32\uff0c\u540c\u65f6\u5411 DLL EntryPoint \u7684\u540d\u79f0\u4e2d\u8ffd\u52a0\u5b57\u6bcd\u201cA\u201d\u3002\u5927\u591a\u6570 Win32 API \u4f7f\u7528\u8fd9\u79cd\u8ffd\u52a0\u201cW\u201d\u6216\u201cA\u201d\u7684\u7ea6\u5b9a\u3002\u5982\u679c CharSet \u8bbe\u7f6e\u4e3a Auto\uff0c\u5219\u8fd9\u79cd\u8f6c\u6362\u5c31\u662f\u4e0e\u5e73\u53f0\u6709\u5173\u7684\uff08\u5728 Windows NT \u4e0a\u4e3a Unicode\uff0c\u5728 Windows 98 \u4e0a\u4e3a Ansi\uff09\u3002CharSet \u7684\u9ed8\u8ba4\u503c\u4e3a Ansi\u3002CharSet \u5b57\u6bb5\u4e5f\u7528\u4e8e\u786e\u5b9a\u5c06\u4ece\u6307\u5b9a\u7684 DLL \u5bfc\u5165\u54ea\u4e2a\u7248\u672c\u7684\u51fd\u6570\u3002CharSet.Ansi \u548c CharSet.Unicode \u7684\u540d\u79f0\u5339\u914d\u89c4\u5219\u5927\u4e0d\u76f8\u540c\u3002
\n\u5bf9\u4e8e Ansi \u6765\u8bf4\uff0c\u5982\u679c\u5c06 EntryPoint \u8bbe\u7f6e\u4e3a\u201cMyMethod\u201d\u4e14\u5b83\u5b58\u5728\u7684\u8bdd\uff0c\u5219\u8fd4\u56de\u201cMyMethod\u201d\u3002\u5982\u679c DLL \u4e2d\u6ca1\u6709\u201cMyMethod\u201d\uff0c\u4f46\u5b58\u5728\u201cMyMethodA\u201d\uff0c\u5219\u8fd4\u56de\u201cMyMethodA\u201d\u3002\u5bf9\u4e8e Unicode \u6765\u8bf4\u5219\u6b63\u597d\u76f8\u53cd\u3002\u5982\u679c\u5c06 EntryPoint \u8bbe\u7f6e\u4e3a\u201cMyMethod\u201d\u4e14\u5b83\u5b58\u5728\u7684\u8bdd\uff0c\u5219\u8fd4\u56de\u201cMyMethodW\u201d\u3002\u5982\u679c DLL \u4e2d\u4e0d\u5b58\u5728\u201cMyMethodW\u201d\uff0c\u4f46\u5b58\u5728\u201cMyMethod\u201d\uff0c\u5219\u8fd4\u56de\u201cMyMethod\u201d\u3002\u5982\u679c\u4f7f\u7528\u7684\u662f Auto\uff0c\u5219\u5339\u914d\u89c4\u5219\u4e0e\u5e73\u53f0\u6709\u5173\uff08\u5728 Windows NT \u4e0a\u4e3a Unicode\uff0c\u5728 Windows 98 \u4e0a\u4e3a Ansi\uff09\u3002\u5982\u679c ExactSpelling \u8bbe\u7f6e\u4e3a true\uff0c\u5219\u53ea\u6709\u5f53 DLL \u4e2d\u5b58\u5728\u201cMyMethod\u201d\u65f6\u624d\u8fd4\u56de\u201cMyMethod\u201d\u3002<\/p>\n
\n\u5982\u679c\u4f60\u7684\u65b9\u6cd5\u540d\u4e0d\u60f3\u4e0eapi\u51fd\u6570\u540c\u540d\u7684\u8bdd\uff0c\u4e00\u5b9a\u8981\u6307\u5b9a\u6b64\u53c2\u6570,\u4f8b\u5982\uff1a
\n[DllImport(\"user32.dll\",CharSet=\"CharSet.Auto\",EntryPoint=\"MessageBox\")]
\npublic static extern int MsgBox(IntPtr hWnd,string txt,string caption, int type);<\/code><\/p>\n
\n\u5982\u679c\u4e3a true\uff0c\u5219\u5f53 DllImportAttribute.CharSet \u5b57\u6bb5\u8bbe\u7f6e\u4e3a CharSet \u7684 Ansi \u503c\u65f6\uff0c\u5411\u65b9\u6cd5\u540d\u79f0\u4e2d\u8ffd\u52a0\u5b57\u6bcd A\uff0c\u5f53 DllImportAttribute.CharSet \u5b57\u6bb5\u8bbe\u7f6e\u4e3a CharSet \u7684 Unicode \u503c\u65f6\uff0c\u5411\u65b9\u6cd5\u7684\u540d\u79f0\u4e2d\u8ffd\u52a0\u5b57\u6bcd W\u3002\u6b64\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u662f false\u3002<\/p>\n
\ntrue \u6307\u793a\u8c03\u7528\u65b9\u5c06\u8c03\u7528 SetLastError\uff0c\u9ed8\u8ba4\u4e3a false\u3002\u8fd0\u884c\u65f6\u5c01\u9001\u62c6\u6536\u5668\u5c06\u8c03\u7528 GetLastError \u5e76\u7f13\u5b58\u8fd4\u56de\u7684\u503c\uff0c\u4ee5\u9632\u5176\u88ab\u5176\u4ed6 API \u8c03\u7528\u91cd\u5199\u3002\u7528\u6237\u53ef\u901a\u8fc7\u8c03\u7528 GetLastWin32Error \u6765\u68c0\u7d22\u9519\u8bef\u4ee3\u7801\u3002<\/p>\n
\n1\u3001\u6570\u503c\u578b\u76f4\u63a5\u7528\u5bf9\u5e94\u7684\u5c31\u53ef\u3002\uff08DWORD -> int , WORD -> Int16\uff09<\/strong><\/p>\n
\n\u6ce8\u610f\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8981\u5148\u7528StructLayout\u7279\u6027\u9650\u5b9a\u58f0\u660e\u7ed3\u6784\u6216\u7c7b
\n\u516c\u5171\u8bed\u8a00\u8fd0\u884c\u5e93\u5229\u7528StructLayoutAttribute\u63a7\u5236\u7c7b\u6216\u7ed3\u6784\u7684\u6570\u636e\u5b57\u6bb5\u5728\u6258\u7ba1\u5185\u5b58\u4e2d\u7684\u7269\u7406\u5e03\u5c40,\u5373\u7c7b\u6216\u7ed3\u6784\u9700\u8981\u6309\u67d0\u79cd\u65b9\u5f0f\u6392\u5217\u3002\u5982\u679c\u8981\u5c06\u7c7b\u4f20\u9012\u7ed9\u9700\u8981\u6307\u5b9a\u5e03\u5c40\u7684\u975e\u6258\u7ba1\u4ee3\u7801\uff0c\u5219\u663e\u5f0f\u63a7\u5236\u7c7b\u5e03\u5c40\u662f\u91cd\u8981\u7684\u3002\u5b83\u7684\u6784\u9020\u51fd\u6570\u4e2d\u7528LayoutKind\u503c\u521d\u59cb\u5316 StructLayoutAttribute \u7c7b\u7684\u65b0\u5b9e\u4f8b\u3002 LayoutKind.Sequential \u7528\u4e8e\u5f3a\u5236\u5c06\u6210\u5458\u6309\u5176\u51fa\u73b0\u7684\u987a\u5e8f\u8fdb\u884c\u987a\u5e8f\u5e03\u5c40\u3002
\nLayoutKind.Explicit \u7528\u4e8e\u63a7\u5236\u6bcf\u4e2a\u6570\u636e\u6210\u5458\u7684\u7cbe\u786e\u4f4d\u7f6e\u3002\u5229\u7528 Explicit\uff0c\u6bcf\u4e2a\u6210\u5458\u5fc5\u987b\u4f7f\u7528 FieldOffsetAttribute \u6307\u793a\u6b64\u5b57\u6bb5\u5728\u7c7b\u578b\u4e2d\u7684\u4f4d\u7f6e\u3002\u5982\uff1a
\n[StructLayout(LayoutKind.Explicit, Size=16, CharSet=CharSet.Ansi)]
\npublic class MySystemTime
\n{
\n[FieldOffset(0)]public ushort wYear;
\n[FieldOffset(2)]public ushort wMonth;
\n[FieldOffset(4)]public ushort wDayOfWeek;
\n[FieldOffset(6)]public ushort wDay;
\n[FieldOffset(8)]public ushort wHour;
\n[FieldOffset(10)]public ushort wMinute;
\n[FieldOffset(12)]public ushort wSecond;
\n[FieldOffset(14)]public ushort wMilliseconds;
\n}<\/code>
\n\u4e0b\u9762\u662f\u9488\u5bf9API\u4e2dOSVERSIONINFO\u7ed3\u6784\uff0c\u5728.net\u4e2d\u5b9a\u4e49\u5bf9\u5e94\u7c7b\u6216\u7ed3\u6784\u7684\u4f8b\u5b50\uff1a
\n\/**********************************************
\n* API\u4e2d\u5b9a\u4e49\u539f\u7ed3\u6784\u58f0\u660e
\n* OSVERSIONINFOA STRUCT
\n* dwOSVersionInfoSize DWORD ?
\n* dwMajorVersion DWORD ?
\n* dwMinorVersion DWORD ?
\n* dwBuildNumber DWORD ?
\n* dwPlatformId DWORD ?
\n* szCSDVersion BYTE 128 dup (?)
\n* OSVERSIONINFOA ENDS
\n*
\n* OSVERSIONINFO equ
\n*********************************************\/
\n\/\/.net\u4e2d\u58f0\u660e\u4e3a\u7c7b
\n[ StructLayout( LayoutKind.Sequential )]
\npublic class OSVersionInfo
\n{
\npublic int OSVersionInfoSize;
\npublic int majorVersion;
\npublic int minorVersion;
\npublic int buildNumber;
\npublic int platformId;
\n[MarshalAs( UnmanagedType.ByValTStr, SizeConst=128 )]
\npublic String versionString;
\n}
\n\/\/\u6216\u8005
\n\/\/.net\u4e2d\u58f0\u660e\u4e3a\u7ed3\u6784
\n[ StructLayout( LayoutKind.Sequential )]
\npublic struct OSVersionInfo2
\n{
\npublic int OSVersionInfoSize;
\npublic int majorVersion;
\npublic int minorVersion;
\npublic int buildNumber;
\npublic int platformId;
\n[MarshalAs( UnmanagedType.ByValTStr, SizeConst=128 )]
\npublic String versionString;
\n}<\/code>
\n\u6b64\u4f8b\u4e2d\u7528\u5230MashalAs\u7279\u6027\uff0c\u5b83\u7528\u4e8e\u63cf\u8ff0\u5b57\u6bb5\u3001\u65b9\u6cd5\u6216\u53c2\u6570\u7684\u5c01\u9001\u5904\u7406\u683c\u5f0f\u3002\u7528\u5b83\u4f5c\u4e3a\u53c2\u6570\u524d\u7f00\u5e76\u6307\u5b9a\u76ee\u6807\u9700\u8981\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06\u4e24\u4e2a\u53c2\u6570\u4f5c\u4e3a\u6570\u636e\u7c7b\u578b\u957f\u6307\u9488\u5c01\u9001\u7ed9 Windows API \u51fd\u6570\u7684\u5b57\u7b26\u4e32 (LPStr)\uff1a
\n[MarshalAs(UnmanagedType.LPStr)]
\nString existingfile;
\n[MarshalAs(UnmanagedType.LPStr)]
\nString newfile;<\/code>
\n\u6ce8\u610f\u7ed3\u6784\u4f5c\u4e3a\u53c2\u6570\u65f6\u5019\uff0c\u4e00\u822c\u524d\u9762\u8981\u52a0\u4e0aref\u4fee\u9970\u7b26\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u9519\u8bef\uff1a\u5bf9\u8c61\u7684\u5f15\u7528\u6ca1\u6709\u6307\u5b9a\u5bf9\u8c61\u7684\u5b9e\u4f8b\u3002
\n[DllImport(\"kernel32\", EntryPoint=\"GetVersionEx\")]
\npublic static extern bool GetVersionEx2(ref OSVersionInfo2 osvi);<\/code><\/p>\n
\n\u5982\u679c\u5728\u8c03\u7528\u5e73\u53f0 invoke \u540e\u7684\u4efb\u4f55\u4f4d\u7f6e\u90fd\u672a\u5f15\u7528\u6258\u7ba1\u5bf9\u8c61\uff0c\u5219\u5783\u573e\u56de\u6536\u5668\u53ef\u80fd\u5c06\u5b8c\u6210\u8be5\u6258\u7ba1\u5bf9\u8c61\u3002\u8fd9\u5c06\u91ca\u653e\u8d44\u6e90\u5e76\u4f7f\u53e5\u67c4\u65e0\u6548\uff0c\u4ece\u800c\u5bfc\u81f4\u5e73\u53f0invoke \u8c03\u7528\u5931\u8d25\u3002\u7528 HandleRef \u5305\u88c5\u53e5\u67c4\u53ef\u4fdd\u8bc1\u5728\u5e73\u53f0 invoke \u8c03\u7528\u5b8c\u6210\u524d\uff0c\u4e0d\u5bf9\u6258\u7ba1\u5bf9\u8c61\u8fdb\u884c\u5783\u573e\u56de\u6536\u3002
\n\u4f8b\u5982\u4e0b\u9762\uff1a
\nFileStream fs = new FileStream( \"a.txt\", FileMode.Open );
\nStringBuilder buffer = new StringBuilder( 5 );
\nint read = 0;
\nReadFile(fs.Handle, buffer, 5, out read, 0 ); \/\/\u8c03\u7528Win API\u4e2d\u7684ReadFile\u51fd\u6570<\/code>
\n\u7531\u4e8efs\u662f\u6258\u7ba1\u5bf9\u8c61\uff0c\u6240\u4ee5\u6709\u53ef\u80fd\u5728\u5e73\u53f0\u8c03\u7528\u8fd8\u672a\u5b8c\u6210\u65f6\u5019\u88ab\u5783\u573e\u56de\u6536\u7ad9\u56de\u6536\u3002\u5c06\u6587\u4ef6\u6d41\u7684\u53e5\u67c4\u7528HandleRef\u5305\u88c5\u540e\uff0c\u5c31\u80fd\u907f\u514d\u88ab\u5783\u573e\u7ad9\u56de\u6536:
\n[DllImport( \"Kernel32.dll\" )]
\npublic static extern bool ReadFile(
\nHandleRef hndRef,
\nStringBuilder buffer,
\nint numberOfBytesToRead,
\nout int numberOfBytesRead,
\nref Overlapped flag );
\n......
\n......
\nFileStream fs = new FileStream( \"HandleRef.txt\", FileMode.Open );
\nHandleRef hr = new HandleRef( fs, fs.Handle );
\nStringBuilder buffer = new StringBuilder( 5 );
\nint read = 0;
\n\/\/ platform invoke will hold reference to HandleRef until call ends
\nReadFile( hr, buffer, 5, out read, 0 );<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"