{"id":71201,"date":"2024-10-15T14:50:57","date_gmt":"2024-10-15T06:50:57","guid":{"rendered":"https:\/\/server.hk\/cnblog\/71201\/"},"modified":"2024-10-15T14:50:58","modified_gmt":"2024-10-15T06:50:58","slug":"mvvm%e6%a8%a1%e5%bc%8f%e4%b8%8b%e5%a6%82%e4%bd%95%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-mvvm%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/71201\/","title":{"rendered":"MVVM\u6a21\u5f0f\u4e0b\u5982\u4f55\u9023\u63a5\u6578\u64da\u5eab (MVVM\u9023\u63a5\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"mvvm%e6%a8%a1%e5%bc%8f%e4%b8%8b%e5%a6%82%e4%bd%95%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-mvvm%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-mXHBvshdqn\">MVVM\u6a21\u5f0f\u4e0b\u5982\u4f55\u9023\u63a5\u6578\u64da\u5eab (MVVM\u9023\u63a5\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0cMVVM\uff08Model-View-ViewModel\uff09\u6a21\u5f0f\u56e0\u5176\u6e05\u6670\u7684\u7d50\u69cb\u548c\u826f\u597d\u7684\u53ef\u7dad\u8b77\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u4f7f\u7528\u3002\u9019\u7a2e\u6a21\u5f0f\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MVVM\u6a21\u5f0f\u4e0b\u9023\u63a5\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"mvvm%e6%a8%a1%e5%bc%8f%e6%a6%82%e8%bf%b0-mXHBvshdqn\">MVVM\u6a21\u5f0f\u6982\u8ff0<\/h2>\n<p>MVVM\u6a21\u5f0f\u5c07\u61c9\u7528\u7a0b\u5e8f\u5206\u70ba\u4e09\u500b\u4e3b\u8981\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>Model\uff1a<\/strong>\u8ca0\u8cac\u6578\u64da\u548c\u696d\u52d9\u908f\u8f2f\uff0c\u901a\u5e38\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002<\/li>\n<li><strong>View\uff1a<\/strong>\u7528\u6236\u754c\u9762\u90e8\u5206\uff0c\u986f\u793a\u6578\u64da\u4e26\u63a5\u6536\u7528\u6236\u8f38\u5165\u3002<\/li>\n<li><strong>ViewModel\uff1a<\/strong>\u4f5c\u70baModel\u548cView\u4e4b\u9593\u7684\u6a4b\u6a11\uff0c\u8ca0\u8cac\u8655\u7406\u7528\u6236\u8f38\u5165\u4e26\u66f4\u65b0View\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-mXHBvshdqn\">\u6578\u64da\u5eab\u9023\u63a5\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u5728MVVM\u6a21\u5f0f\u4e0b\u9023\u63a5\u6578\u64da\u5eab\u7684\u904e\u7a0b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-mXHBvshdqn\">1. \u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528ADO.NET\u6216Entity Framework\u7b49\u6280\u8853\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528ADO.NET\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>using System.Data.SqlClient;\n\npublic class DatabaseConnection\n{\n    private string connectionString = \"your_connection_string_here\";\n\n    public SqlConnection GetConnection()\n    {\n        return new SqlConnection(connectionString);\n    }\n}\n<\/code><\/pre>\n<h3 id=\"2-%e5%89%b5%e5%bb%bamodel-mXHBvshdqn\">2. \u5275\u5efaModel<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500bModel\u985e\u4f86\u8868\u793a\u6578\u64da\u3002\u9019\u500b\u985e\u5c07\u5305\u542b\u6578\u64da\u5c6c\u6027\u548c\u8207\u6578\u64da\u5eab\u4ea4\u4e92\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre><code>public class UserModel\n{\n    public int Id { get; set; }\n    public string Name { get; set; }\n\n    public void SaveUser()\n    {\n        using (var connection = new DatabaseConnection().GetConnection())\n        {\n            connection.Open();\n            var command = new SqlCommand(\"INSERT INTO Users (Name) VALUES (@Name)\", connection);\n            command.Parameters.AddWithValue(\"@Name\", Name);\n            command.ExecuteNonQuery();\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"3-%e5%89%b5%e5%bb%baviewmodel-mXHBvshdqn\">3. \u5275\u5efaViewModel<\/h3>\n<p>ViewModel\u5c07\u8ca0\u8cac\u8655\u7406\u7528\u6236\u7684\u8f38\u5165\u4e26\u8abf\u7528Model\u4e2d\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684ViewModel\u793a\u4f8b\uff1a<\/p>\n<pre><code>using System.ComponentModel;\n\npublic class UserViewModel : INotifyPropertyChanged\n{\n    private UserModel user;\n\n    public UserViewModel()\n    {\n        user = new UserModel();\n    }\n\n    public string UserName\n    {\n        get { return user.Name; }\n        set\n        {\n            user.Name = value;\n            OnPropertyChanged(\"UserName\");\n        }\n    }\n\n    public void SaveUser()\n    {\n        user.SaveUser();\n    }\n\n    public event PropertyChangedEventHandler PropertyChanged;\n\n    protected void OnPropertyChanged(string propertyName)\n    {\n        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));\n    }\n}\n<\/code><\/pre>\n<h3 id=\"4-%e5%89%b5%e5%bb%baview-mXHBvshdqn\">4. \u5275\u5efaView<\/h3>\n<p>\u6700\u5f8c\uff0c\u60a8\u9700\u8981\u5275\u5efaView\u4f86\u986f\u793a\u6578\u64da\u4e26\u63a5\u6536\u7528\u6236\u8f38\u5165\u3002\u9019\u53ef\u4ee5\u4f7f\u7528XAML\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>&lt;Window x:Class=\"YourNamespace.MainWindow\"\n        xmlns=\"http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\/presentation\"\n        xmlns:x=\"http:\/\/schemas.microsoft.com\/winfx\/2006\/xaml\"\n        Title=\"User Form\"&gt;\n    &lt;Grid&gt;\n        &lt;TextBox Text=\"{Binding UserName, UpdateSourceTrigger=PropertyChanged}\" \/&gt;\n        &lt;Button Content=\"Save\" Command=\"{Binding SaveUserCommand}\" \/&gt;\n    &lt;\/Grid&gt;\n&lt;\/Window&gt;\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mXHBvshdqn\">\u7e3d\u7d50<\/h2>\n<p>\u5728MVVM\u6a21\u5f0f\u4e0b\u9023\u63a5\u6578\u64da\u5eab\u7684\u904e\u7a0b\u6d89\u53ca\u5230\u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u3001\u5275\u5efaModel\u3001ViewModel\u548cView\u3002\u9019\u7a2e\u7d50\u69cb\u5316\u7684\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\uff0c\u9084\u4f7f\u5f97\u6578\u64da\u7684\u8655\u7406\u66f4\u52a0\u6e05\u6670\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cMVVM\u6a21\u5f0f\u662f\u4e00\u500b\u7406\u60f3\u7684\u9078\u64c7\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MVVM\u6a21\u5f0f\u4e0b\u5982\u4f55\u6709\u6548\u9023\u63a5\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u6578\u64da\u7d81\u5b9a\u8207\u696d\u52d9\u908f\u8f2f\u5206\u96e2\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u7684\u53ef\u7dad\u8b77\u6027\u8207\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-71201","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=71201"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71201\/revisions"}],"predecessor-version":[{"id":71202,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/71201\/revisions\/71202"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=71201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=71201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=71201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}