{"id":10627,"date":"2021-10-15T11:37:15","date_gmt":"2021-10-15T02:37:15","guid":{"rendered":"https:\/\/www.moonmile.net\/blog\/?p=10627"},"modified":"2021-10-15T15:07:52","modified_gmt":"2021-10-15T06:07:52","slug":"access-%e3%82%92-net-core-%e3%81%ae-ef-core%e3%81%a7%e3%82%a2%e3%82%af%e3%82%bb%e3%82%b9%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.moonmile.net\/blog\/archives\/10627","title":{"rendered":"ACCESS \u3092 .NET Core \u306e EF Core\u3067\u30a2\u30af\u30bb\u30b9\u3059\u308b"},"content":{"rendered":"\n

\u3044\u307e\u3055\u3089 ACCESS \u3092\u6271\u3046\u306b\u3057\u3066\u3082 ADO.NET \u306e DataSet \u3084 DataTable \u3092\u4f7f\u3044\u305f\u304f\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u7d20\u76f4\u306b .NET Framework \u306e\u307b\u3046\u3092\u4f7f\u3063\u3066\u3082\u3044\u3044\u306e\u3067\u3059\u304c\u3001.NET5\uff08\u591a\u5206 .NET6\u3067\u3082\u5927\u4e08\u592b\uff09\u3067 ACCESS \u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\uff08*.mdb\uff09\u3092\u6271\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

EntityFrameworkCore.Jet: Entity Framework Core provider for Access database<\/a> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

\u3061\u3087\u3063\u3068\u3060\u3051\u96e3\u70b9\u304c\u3042\u3063\u3066\u3001EF Core \u306e 3.x\uff08\u6700\u65b0\u306f EF Core 5.x\uff09\u3060\u3051\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u306e\u3067 EF Core \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u3072\u3068\u3064\u524d\u306b\u623b\u3055\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u3067\u3059\u304c\u3001DataSet \u3092\u4f7f\u3063\u3066\u3061\u307e\u3061\u307e\u3068\u30ab\u30e9\u30e0\u540d\u3092\u5165\u529b\u3059\u308b\u3088\u308a\u306f\u697d\u3067\u3059\u3002\u73fe\u5728\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3060\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

<Project Sdk="Microsoft.NET.Sdk">\n  <PropertyGroup>\n    <OutputType>WinExe<\/OutputType>\n    <TargetFramework>net5.0-windows<\/TargetFramework>\n    <UseWPF>true<\/UseWPF>\n  <\/PropertyGroup>\n\t<ItemGroup>\n\t\t<PackageReference Include="EntityFrameworkCore.Jet.OleDb" Version="3.1.0" \/>\n\t\t<PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.20" \/>\n\t<\/ItemGroup>\n<\/Project>\n<\/code><\/pre><\/div>\n\n\n\n
\u3053\u308c\u306f WPF \u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306a\u306e\u3067\u3059\u304c\u3001webapi \u3082\u4f5c\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
<Project Sdk="Microsoft.NET.Sdk.Web">\n  <PropertyGroup>\n    <TargetFramework>net5.0-windows<\/TargetFramework>\n  <\/PropertyGroup>\n  <ItemGroup>\n    <PackageReference Include="Swashbuckle.AspNetCore" Version="5.6.3" \/>\n\t<PackageReference Include="EntityFrameworkCore.Jet.OleDb" Version="3.1.0" \/>\n\t<PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.20" \/>\n  <\/ItemGroup>\n<\/Project>\n<\/code><\/pre><\/div>\n\n\n\n
webapi \u306e\u5834\u5408\u3001.NET5 \u3067\u4f5c\u308b\u3068 TargetFramework \u304c\u300cnet5.0\u300d\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u300cnet5.0-windows\u300d\u306e\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u307e\u3059\u3002OLEDB \u95a2\u4fc2\u304c windows \u4e0a\u306e\u307f\u306e\u52d5\u4f5c\u306e\u305f\u3081 EntityFrameworkCore.Jet.OleDb \u306e\u5236\u9650\u3067\u3059\u3002\u3061\u306a\u307f\u306b net5.0 \u306e\u307e\u307e\u3067\u3082\u3001\u8b66\u544a\u306f\u3067\u307e\u3059\u304c EntityFrameworkCore.Jet.OleDb \u306e\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u306f\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
Microsoft.ACE.OLEDB.12.0 \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n\n\n\n
\u5b9f\u306f Windows 10 \u304c\u7d20\u306e\u72b6\u614b\u3060\u3068\u3001ACCESS \u7528\u306e OLE \u30c9\u30e9\u30a4\u30d0\u30fc\u304c\u5165\u3063\u3066\u307e\u305b\u3093\u3002\u3042\u3068\u3001\u6700\u65b0\u7248\u306e ACCESS \u306e\u5834\u5408\u3001Microsoft.ACE.OLEDB.16.0 \u3060\u3068\u3001EntityFrameworkCore.Jet.OleDb \u304c\u3046\u307e\u304f\u52d5\u304b\u306a\u304b\u3063\u305f\u306e\u3067 12.0 \u306e\u307b\u3046\u3092\u5165\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
Download Microsoft Access \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30a8\u30f3\u30b8\u30f3 2010 \u518d\u9812\u5e03\u53ef\u80fd\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 from Official Microsoft Download Center 
https:\/\/www.microsoft.com\/ja-jp\/download\/details.aspx?id=13255<\/a><\/p>\n\n\n\n
\u3046\u3061\u306e Windows 10 \u306e\u74b0\u5883\u3067\u306f 32bit \u7248\u306e Office 2019 \u304c\u5165\u3063\u3066\u3044\u3066\u3001\u3042\u3068\u304b\u3089 Microsoft.ACE.OLEDB.16.0 \u306e\u518d\u914d\u5e03\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u306a\u305c\u304b 32\/64 \u306e\u3069\u3061\u3089\u3082\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u300216.0 \u306e\u307b\u3046\u306f\u5fae\u5999\u306b\u3084\u3084\u3053\u3057\u3044\u3053\u3068\u306b\u306a\u308b\u304b\u3082\u3002Microsoft.ACE.OLEDB.16.0\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306b\u3064\u3044\u3066<\/a> <\/p>\n\n\n\n
DbContext \u3092\u4f5c\u308b<\/h2>\n\n\n\n
\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e DbContext \u3092\u4f5c\u308a\u307e\u3059\u3002\u3053\u308c\u306f EF Core \u306e DbContext \u306e\u4f5c\u308a\u65b9\u3068\u540c\u3058\u3067\u3059\u3002OnModelCreating \u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u3066\u3001HasNoKey \u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u306e\u306f ACCESS \u30c7\u30fc\u30bf\u304b\u3089\u8aad\u307f\u53d6\u308a\u3057\u304b\u3057\u306a\u3044\u304b\u3089\u3067\u3059\u3002\u5143\u30c6\u30fc\u30d6\u30eb\uff08\u4e88\u7d04\u30c6\u30fc\u30d6\u30eb\u3068\u304b\u306b\u306f Key \u304c\u5165\u3063\u3066\u3044\u307e\u305b\u3093\uff09\u3002<\/p>\n\n\n\n
public class AccessDbContext : DbContext\n{\n    public AccessDbContext()\n    {\n\n    }\n    public AccessDbContext(DbContextOptions<AccessDbContext> options) : base(options)\n    {\n\n    }\n    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)\n    {\n        OleDbConnectionStringBuilder builder = new OleDbConnectionStringBuilder();\n        builder.Provider = "Microsoft.ACE.OLEDB.12.0";\n        builder.DataSource = @"ACCESS\u30d5\u30a1\u30a4\u30eb.mdb";\n        string cnstr = builder.ConnectionString;\n        optionsBuilder.UseJetOleDb(cnstr);\n    }\n    protected override void OnModelCreating(ModelBuilder modelBuilder)\n    {\n        modelBuilder.Entity<T_\u4e88\u7d04>().HasNoKey();\n        modelBuilder.Entity<T_\u4e88\u7d04sub>().HasNoKey();\n        modelBuilder.Entity<T_\u9867\u5ba2>().HasNoKey();\n...\n\n    }\n    public DbSet<T_\u4e88\u7d04> T_\u4e88\u7d04 { get; set; }\n    public DbSet<T_\u4e88\u7d04sub> T_\u4e88\u7d04sub { get; set; }\n    public DbSet<T_\u9867\u5ba2> T_\u9867\u5ba2 { get; set; }\n...\n}<\/code><\/pre><\/div>\n\n\n\n
\u5bfe\u5fdc\u3059\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u308a\u65b9\u3082\u30b3\u30fc\u30c9\u30d5\u30a1\u30fc\u30b9\u30c8\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4f5c\u308a\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002\u3084\u305f\u3089\u306b Nullable \u304c\u591a\u3044\u306e\u3068\u3001\u30ab\u30e9\u30e0\u540d\u304c\u65e5\u672c\u8a9e\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304c\u5143\u30c7\u30fc\u30bf\u304c ACCESS \u306e\u305f\u3081\u3067\u3059\u3002\u5143\u306e ACCESS \u3067\u306f VBA \u3067\u30ac\u30b7\u30ac\u30b7\u3068\u7d44\u3093\u3067\u3044\u3066\u5927\u5909\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n
public partial class T_\u4e88\u7d04\n{\n    public int KID { get; set; }\n    public Nullable<int> TID { get; set; }\n    public Nullable<int> \u4e88\u7d04\u8005 { get; set; }\n    public Nullable<int> \uff34aID { get; set; }\n    public Nullable<System.DateTime> \u65e5\u4ed8 { get; set; }\n    public Nullable<System.DateTime> \u8a18\u9332\u65e5 { get; set; }\n    public Nullable<System.DateTime> \u5951\u7d04\u65e5 { get; set; }\n    public Nullable<int> \u4e88\u7d04 { get; set; }\n...\n}<\/code><\/pre><\/div>\n\n\n\n
ACCESS \u306e\u30ab\u30e9\u30e0\u540d\u306f\u7d50\u69cb\u81ea\u7531\u306b\u4f5c\u308c\u308b\u306e\u3067\u3001\u90f5\u4fbf\u756a\u53f7\u306e\u8a18\u53f7\u300c\u3012\u300d\u3082\u4f7f\u3048\u307e\u3059\u3002\u305f\u3060\u3057\u3001C# \u306e\u5834\u5408\u306f\u300c\u3012\u300d\u3092\u30d7\u30ed\u30d1\u30c6\u30a3\u540d\u3068\u3057\u3066\u306f\u4f7f\u3048\u306a\u3044\u306e\u3067 Column \u5c5e\u6027\u3067\u5225\u540d\u3092\u3042\u3066\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
public partial class T_\u9867\u5ba2Sub\n{\n    public int TIDa { get; set; }\n    public Nullable<int> TID { get; set; }\n    public string \u90e8\u7f72\u540d { get; set; }\n    public string TEL { get; set; }\n    public string FAX { get; set; }\n    public string \u643a\u5e2f { get; set; }\n    [Column("\u3012")]\n    public string ZIP { get; set; }\n    public string \u4f4f\u62401 { get; set; }\n    public string \u4f4f\u62402 { get; set; }\n...\n}<\/code><\/pre><\/div>\n\n\n\n
\u3053\u3053\u307e\u3067\u3067\u304d\u3042\u304c\u308b\u3068\u3001\u901a\u5e38\u306e EF Core \u3068\u540c\u3058\u3088\u3046\u306b ACCESS \u306b\u30a2\u30af\u30bb\u30b9\u304c\u3067\u304d\u307e\u3059\u3002\u3042\u307e\u308a\u7121\u8336\u3092\u3059\u308b\u3068 ACCESS \u30d5\u30a1\u30a4\u30eb\u304c\u58ca\u308c\u305d\u3046\u306a\u6c17\u304c\u3059\u308b\u306e\u3067\u3059\u304c\u3001\u307e\u3042 SELECT \u3060\u3051\u306a\u3089\u3070\u5927\u4e08\u592b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
webapi \u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3067\u4f7f\u3046<\/h2>\n\n\n\n
LINQ \u4f7f\u3063\u3066\u8a18\u8ff0\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u975e\u5e38\u306b\u697d\u3067\u3059\u3002<\/p>\n\n\n\n
\/\/\/ <summary>\n\/\/\/ \u65e5\u4ed8\u3092\u6307\u5b9a\u3057\u3066\u53d6\u5f97\u3059\u308b\n\/\/\/ <\/summary>\n\/\/\/ <param name="date"><\/param>\n\/\/\/ <returns><\/returns>\n[HttpGet("date\/{date}")]\npublic IEnumerable<T_\u4e88\u7d04> Get(string date)\n{\n    DateTime dt = DateTime.Parse(date);\n    var items =  _context.T_\u4e88\u7d04\n        .Where( t => t.\u65e5\u4ed8 == dt.Date )\n        .ToList();\n    foreach ( var item in items )\n    {\n        item.\u4e88\u7d04Sub = _context.T_\u4e88\u7d04sub.Where(t => t.KID == item.KID)\n            .OrderBy(t => t.Sort)\n            .ToList();\n        item.\u9867\u5ba2 = _context.T_\u9867\u5ba2.FirstOrDefault(t => t.TID == item.TID);\n        item.\u9867\u5ba2Sub = _context.T_\u9867\u5ba2Sub.FirstOrDefault(t => t.TIDa == item.TIDa);\n        item.\u4f1a\u8b70\u5ba4Item = _context.T_ROOM.FirstOrDefault(t => t.HID == item.\u4f1a\u8b70\u5ba4);\n    }\n    return items;\n}<\/code><\/pre><\/div>\n\n\n\n
\u4ed8\u5c5e\u3059\u308b\u30c7\u30fc\u30bf\u306f\u3001LINQ \u306e\u5834\u5408\u306f Include \u3092\u4f7f\u3063\u3066\u53d6\u3063\u3066\u304d\u3066\u3082\u3088\u3044\u306e\u3067\u3059\u304c\u3001\u5916\u90e8\u30ad\u30fc\u306e\u8a18\u8ff0\u304c\u7d50\u69cb\u9762\u5012\uff08\u6a19\u6e96\u306b\u3042\u3063\u3066\u3044\u306a\u3044\u3068\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u3053\u3068\u304c\u591a\u3044\uff09\u306e\u3067\u3001\u3042\u3068\u304b\u3089\u624b\u4f5c\u696d\u3067\u3068\u3063\u3066\u304d\u3066\u3044\u307e\u3059\u3002\u591a\u5c11\u691c\u7d22\u30b9\u30d4\u30fc\u30c9\u306f\u843d\u3061\u307e\u3059\u304c\u3001\u30c4\u30fc\u30eb\u7684\u306b\u306f\u3053\u308c\u3067\u5341\u5206\u3067\u3057\u3087\u3046\u3002\u307e\u3058\u3081\u306b\u4f5c\u308b\u3068\u304d\u306f SQL Server \u7b49\u306b\u30c7\u30fc\u30bf\u3092\u79fb\u884c\uff06\u30ab\u30e9\u30e0\u540d\u3092\u9023\u643a\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u76f4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
ACCESS\u30d5\u30a1\u30a4\u30eb\u306e\u30ed\u30c3\u30af<\/h2>\n\n\n\n
ACCESS\u306e\u5834\u5408\u3001\u30c6\u30fc\u30d6\u30eb\u5358\u4f4d\u30ed\u30c3\u30af\u304c\u304b\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4e0a\u8a18\u306e\u5834\u5408\u3001ACCESS \u672c\u4f53\u3067\u300c\u4e88\u7d04\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u958b\u3044\u3066\u3044\u308b\u3068\uff08\u30c7\u30b6\u30a4\u30f3\u3092\u958b\u304f\u3082\u542b\u3080\uff09\u3068\u3001EF Core \u5074\u3067\u300c\u4e88\u7d04\u300d\u30c6\u30fc\u30d6\u30eb\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u306a\u304f\u3066\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u30ed\u30c3\u30af\u89e3\u9664\u5f85\u3061\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u306a\u306e\u3067\u3001\u540c\u6642\u5229\u7528\u3092\u3057\u3066\u3044\u308b\u3068\u5909\u306a\u3053\u3068\u306b\u306a\u308a\u305d\u3046\u306a\u306e\u3067\u3059\u304c\u3001\u305d\u3053\u306f\u904b\u7528\u6b21\u7b2c\u3068\u3044\u3046\u3053\u3068\u3067\u3002\u3072\u3068\u307e\u305a\u3001ACCESS \u304b\u3089 SQL Server \u3078\u306e\u79fb\u884c\u30c4\u30fc\u30eb\u3092\u4f5c\u308b\u3068\u304d\u306b EntityFrameworkCore.Jet \u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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