{"id":165883,"date":"2024-11-05T13:38:19","date_gmt":"2024-11-05T05:38:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/165883\/"},"modified":"2024-11-05T13:38:19","modified_gmt":"2024-11-05T05:38:19","slug":"%e5%bf%ab%e9%80%9f%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%8a%e4%b8%8b%e6%96%87%e9%a1%9e-net%e6%8c%87%e5%8d%97-net%e6%96%b0%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%8a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/165883\/","title":{"rendered":"\u5feb\u901f\u5275\u5efa\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e\u2014\u2014.NET\u6307\u5357 (.net\u65b0\u5efa\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e)"},"content":{"rendered":"

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1. \u5b89\u88ddEntity Framework<\/h3>\n

\u9996\u5148\uff0c\u60a8\u9700\u8981\u5728\u60a8\u7684.NET\u9805\u76ee\u4e2d\u5b89\u88ddEntity Framework\u3002\u53ef\u4ee5\u4f7f\u7528NuGet\u5305\u7ba1\u7406\u5668\u4f86\u5b89\u88dd\u3002\u6253\u958b\u60a8\u7684\u9805\u76ee\uff0c\u7136\u5f8c\u5728Package Manager Console\u4e2d\u904b\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n

Install-Package EntityFramework<\/code><\/pre>\n
2. \u5b9a\u7fa9\u6578\u64da\u6a21\u578b<\/h3>\n
\u5728\u5275\u5efa\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5b9a\u7fa9\u6578\u64da\u6a21\u578b\u3002\u9019\u4e9b\u6a21\u578b\u5c07\u6620\u5c04\u5230\u6578\u64da\u5eab\u4e2d\u7684\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6a21\u578b\u793a\u4f8b\uff1a<\/p>\n
public class Product\n{\n    public int Id { get; set; }\n    public string Name { get; set; }\n    public decimal Price { get; set; }\n}<\/code><\/pre>\n
3. \u5275\u5efa\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e<\/h3>\n
\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500b\u7e7c\u627f\u81eaDbContext\u7684\u985e\u3002\u9019\u500b\u985e\u5c07\u5305\u542b\u60a8\u7684\u6578\u64da\u6a21\u578b\u96c6\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e\u7684\u793a\u4f8b\uff1a<\/p>\n
using System.Data.Entity;\n\npublic class ApplicationDbContext : DbContext\n{\n    public ApplicationDbContext() : base(\"name=DefaultConnection\")\n    {\n    }\n\n    public DbSet Products { get; set; }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c`ApplicationDbContext`\u985e\u7e7c\u627f\u81ea`DbContext`\uff0c\u4e26\u4e14\u5305\u542b\u4e00\u500b`DbSet`\u5c6c\u6027\uff0c\u9019\u6a23\u60a8\u5c31\u53ef\u4ee5\u5c0d`Product`\u6a21\u578b\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n
4. \u914d\u7f6e\u9023\u63a5\u5b57\u7b26\u4e32<\/h3>\n
\u5728\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u60a8\u9700\u8981\u6dfb\u52a0\u4e00\u500b\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u4ee5\u4fbf\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u53ef\u4ee5\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u9023\u63a5\u5b57\u7b26\u4e32\uff1a<\/p>\n
<connectionStrings>\n    <add name=\"DefaultConnection\" \n         connectionString=\"Data Source=(localdb)MSSQLLocalDB;Initial Catalog=MyDatabase;Integrated Security=True\" \n         providerName=\"System.Data.SqlClient\" \/>\n<\/connectionStrings><\/code><\/pre>\n
5. \u4f7f\u7528\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e<\/h3>\n
\u73fe\u5728\uff0c\u60a8\u53ef\u4ee5\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u6578\u64da\u5eab\u4e0a\u4e0b\u6587\u985e\u4f86\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u6dfb\u52a0\u548c\u67e5\u8a62\u7522\u54c1\uff1a<\/p>\n
using (var context = new ApplicationDbContext())\n{\n    \/\/ \u6dfb\u52a0\u65b0\u7522\u54c1\n    var product = new Product { Name = \"Sample Product\", Price = 9.99M };\n    context.Products.Add(product);\n    context.SaveChanges();\n\n    \/\/ \u67e5\u8a62\u7522\u54c1\n    var products = context.Products.ToList();\n}<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
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