{"id":58057,"date":"2024-10-12T19:24:15","date_gmt":"2024-10-12T11:24:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/58057\/"},"modified":"2024-10-12T19:24:15","modified_gmt":"2024-10-12T11:24:15","slug":"net%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae%e8%a9%b3%e8%a7%a3-net%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/58057\/","title":{"rendered":".NET\u6578\u64da\u5eab\u914d\u7f6e\u8a73\u89e3 (.net\u6578\u64da\u5eab\u914d\u7f6e)"},"content":{"rendered":"<h1 id=\"net%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae%e8%a9%b3%e8%a7%a3-net%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae-rLfgJYzeYC\">.NET\u6578\u64da\u5eab\u914d\u7f6e\u8a73\u89e3 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\/&gt;\n&lt;\/connectionStrings&gt;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u9023\u63a5\u5b57\u7b26\u4e32\u6307\u5b9a\u4e86\u6578\u64da\u5eab\u7684\u4f3a\u670d\u5668\u5730\u5740\u3001\u6578\u64da\u5eab\u540d\u7a31\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002\u6839\u64da\u4e0d\u540c\u7684\u6578\u64da\u5eab\u985e\u578b\uff0c\u9023\u63a5\u5b57\u7b26\u4e32\u7684\u683c\u5f0f\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%8a%e4%b8%8b%e6%96%87%e7%9a%84%e4%bd%bf%e7%94%a8-rLfgJYzeYC\">2. \u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u7684\u4f7f\u7528<\/h2>\n<p>\u5728\u4f7f\u7528Entity Framework\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\uff08DbContext\uff09\u662f\u6838\u5fc3\u7d44\u4ef6\u3002\u5b83\u8ca0\u8cac\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u4e26\u63d0\u4f9b\u5c0d\u6578\u64da\u7684\u67e5\u8a62\u548c\u64cd\u4f5c\u529f\u80fd\u3002<\/p>\n<pre><code>\npublic class MyDbContext : DbContext\n{\n    public MyDbContext() : base(\"name=MyDatabase\") { }\n\n    public DbSet&lt;User&gt; Users { get; set; }\n    public DbSet&lt;Product&gt; Products { get; set; }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70baMyDbContext\u7684\u985e\uff0c\u4e26\u5728\u69cb\u9020\u51fd\u6578\u4e2d\u6307\u5b9a\u4e86\u9023\u63a5\u5b57\u7b26\u4e32\u7684\u540d\u7a31\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u901a\u904eDbSet\u5c6c\u6027\u4f86\u8a2a\u554f\u6578\u64da\u8868\u3002<\/p>\n<h2 id=\"3-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e7%a4%ba%e4%be%8b-rLfgJYzeYC\">3. \u6578\u64da\u5eab\u64cd\u4f5c\u793a\u4f8b<\/h2>\n<p>\u4f7f\u7528\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u9032\u884c\u6578\u64da\u64cd\u4f5c\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nusing (var context = new MyDbContext())\n{\n    var user = new User { Name = \"John Doe\", Email = \"john@example.com\" };\n    context.Users.Add(user);\n    context.SaveChanges();\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u65b0\u7684User\u5c0d\u8c61\uff0c\u7136\u5f8c\u5c07\u5176\u6dfb\u52a0\u5230Users\u96c6\u5408\u4e2d\uff0c\u6700\u5f8c\u8abf\u7528SaveChanges\u65b9\u6cd5\u5c07\u66f4\u6539\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"4-%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e6%8a%80%e5%b7%a7-rLfgJYzeYC\">4. 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