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int i = 10;
object obj = i; \/\/\u9690\u5f0f\u88c5\u7bb1
object obj = object(i); \/\/\u663e\u5f0f\u88c5\u7bb1
if(obj is int) \/\/int
Console.WriteLine(\u201cOK\u201d);
Console.WriteLine(obj.GetType()); \/\/System.Int32<\/p>\n
\u6709\u4e24\u79cd\u65b9\u5f0f\u6765\u67e5\u770b\u5305\u88c5\u4ee5\u540e\u7684\u5f15\u7528\u5bf9\u8c61\u4e2d\u5305\u88c5\u7684\u539f\u59cb\u6570\u636e\u7684\u7c7b\u578b\u3002\u8981\u5224\u65ad\u539f\u59cb\u7c7b\u578b\u662f\u5426\u662f\u67d0\u4e2a\u7ed9\u5b9a\u7684\u539f\u5b50\u7c7b\u578b\uff0c\u7528is\uff1b\u5982\u679c\u8981\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u7528object\u7c7b\u7684GetType\u65b9\u6cd5\u3002<\/p>\n
\u62c6\u7bb1\u8f6c\u6362\u662f\u6307\u5c06\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\u663e\u5f0f\u5730\u8f6c\u6362\u6210\u4e00\u4e2a\u503c\u7c7b\u578b\uff0c\u6216\u662f\u5c06\u4e00\u4e2a\u63a5\u53e3\u7c7b\u578b\u663e\u5f0f\u5730\u8f6c\u6362\u6210\u4e00\u4e2a\u6267\u884c\u8be5\u63a5\u53e3\u5730\u503c\u7c7b\u578b\u3002\u6ce8\u610f\u88c5\u7bb1\u64cd\u4f5c\u53ef\u4ee5\u9690\u5f0f\u8fdb\u884c\u4f46\u62c6\u7bb1\u64cd\u4f5c\u5fc5\u987b\u662f\u663e\u5f0f\u7684\u3002\u62c6\u7bb1\u8fc7\u7a0b\u5206\u6210\u4e24\u6b65\uff1a\u9996\u5148\uff0c\u68c0\u67e5\u8fd9\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u770b\u5b83\u662f\u5426\u4e3a\u7ed9\u5b9a\u7684\u503c\u7c7b\u578b\u7684\u88c5\u7bb1\u503c\u3002\u7136\u540e\uff0c\u628a\u8fd9\u4e2a\u5b9e\u4f8b\u7684\u503c\u62f7\u8d1d\u7ed9\u503c\u7c7b\u578b\u7684\u53d8\u91cf\u3002\u6bd4\u5982\uff1a
int i = 10;
object obj = i;
int j = (int)obj;
\u6709\u4e24\u79cd\u65b9\u5f0f\u6765\u67e5\u770b\u5305\u88c5\u4ee5\u540e\u7684\u5f15\u7528\u5bf9\u8c61\u4e2d\u5305\u88c5\u7684\u539f\u59cb\u6570\u636e\u7684\u7c7b\u578b\u3002\u8981\u5224\u65ad\u539f\u59cb\u7c7b\u578b\u662f\u5426\u662f\u67d0\u4e2a\u7ed9\u5b9a\u7684\u539f\u5b50\u7c7b\u578b\uff0c\u7528is\uff1b\u5982\u679c\u8981\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u7528object\u7c7b\u7684GetType\u65b9\u6cd5\u3002<\/p>\n
\u62c6\u7bb1\u8f6c\u6362\u662f\u6307\u5c06\u4e00\u4e2a\u5bf9\u8c61\u7c7b\u578b\u663e\u5f0f\u5730\u8f6c\u6362\u6210\u4e00\u4e2a\u503c\u7c7b\u578b\uff0c\u6216\u662f\u5c06\u4e00\u4e2a\u63a5\u53e3\u7c7b\u578b\u663e\u5f0f\u5730\u8f6c\u6362\u6210\u4e00\u4e2a\u6267\u884c\u8be5\u63a5\u53e3\u5730\u503c\u7c7b\u578b\u3002\u6ce8\u610f\u88c5\u7bb1\u64cd\u4f5c\u53ef\u4ee5\u9690\u5f0f\u8fdb\u884c\u4f46\u62c6\u7bb1\u64cd\u4f5c\u5fc5\u987b\u662f\u663e\u5f0f\u7684\u3002\u62c6\u7bb1\u8fc7\u7a0b\u5206\u6210\u4e24\u6b65\uff1a\u9996\u5148\uff0c\u68c0\u67e5\u8fd9\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u770b\u5b83\u662f\u5426\u4e3a\u7ed9\u5b9a\u7684\u503c\u7c7b\u578b\u7684\u88c5\u7bb1\u503c\u3002\u7136\u540e\uff0c\u628a\u8fd9\u4e2a\u5b9e\u4f8b\u7684\u503c\u62f7\u8d1d\u7ed9\u503c\u7c7b\u578b\u7684\u53d8\u91cf\u3002\u6bd4\u5982\uff1a
int i = 10;
object obj = i;
int j = (int)obj;<\/p>\n","protected":false},"excerpt":{"rendered":"
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