winform是一老技术，感觉都有点掉牙了（我近20年前就是从winform开始接触.net的
）；blazor，是微软技术圈里的新宠，正在被悉心照顾。当这一老一少的技术碰撞后，会有什么火花？
.net v6.0.0-preview.3，给winform和blazor结合带来了前提。https://github.com/axzxs2001/Asp.NetCoreExperiment/tree/master/Asp.NetCoreExperiment/Blazor/BlazorWinForm 是我写的一个简单的demo，在winform窗体中引入blazor。
先看一下长什么样：
是一个简单的用助记码查询药品的例子，输入框查询按钮，table的样式都是Bootstrap5.0的，外层是一个winform的Form窗体。
具体实现，先看项目文件csproj的不一样：Sdk要换成Microsoft.NET.Sdk.Razor，然后是要通过nuget引入这些包。
<Project Sdk="Microsoft.NET.Sdk.Razor"><PropertyGroup><OutputType>WinExe</OutputType><TargetFramework>net6.0-windows</TargetFramework><UseWindowsForms>true</UseWindowsForms></PropertyGroup><ItemGroup><PackageReference Include="Dapper" Version="2.0.78" /><PackageReference Include="Microsoft.AspNetCore.Components.WebView.WindowsForms" Version="6.0.0-preview.3.21201.13" /><PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0-preview.3.21201.4" /><PackageReference Include="Microsoft.NET.Sdk.Razor" Version="5.0.0-preview.8.20414.8" /><PackageReference Include="System.Data.SqlClient" Version="4.8.2" /></ItemGroup><ItemGroup><Content Update="wwwroot\app.css"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content><Content Update="wwwroot\Query.razor"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content><Content Update="wwwroot\css\bootstrap.min.css"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content><Content Update="wwwroot\index.html"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content><Content Update="wwwroot\js\bootstrap.min.js"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content></ItemGroup><ItemGroup><None Update="wwwroot\app.css"><CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory></None><None Update="wwwroot\Query.razor"><CopyToOutputDirectory>Always</CopyToOutputDirectory></None><None Update="wwwroot\index.html"><CopyToOutputDirectory>Always</CopyToOutputDirectory></None></ItemGroup>
</Project>
通过csproj也知道，我是添加了wwwroot文件夹，并添加了一些前端文件：
index.html是一个模板页，引入一些css和js
<!DOCTYPE html>
<html><head><meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /><title>Blazor app</title><base href="/" /><link href="{PROJECT NAME}.styles.css" rel="stylesheet" /><link href="app.css" rel="stylesheet" /><link href="css/bootstrap.min.css" rel="stylesheet" />
</head><body><div id="app" class="container"></div><div id="blazor-error-ui">An unhandled error has occurred.<a href="" class="reload">Reload</a><a class="dismiss">????</a></div><script src="_framework/blazor.webview.js"></script><script src="js/bootstrap.min.js"></script>
</body>
</html>
css和js就不说了，是前端的文件，重点看query.razor，这里实现了主要业务逻辑，业务数据+UI表现
@using Microsoft.AspNetCore.Components.Web
@using Dapper
@using System.Data.SqlClient;
<div class="row"><div class="col-1"></div><div class="col-10"><div class="input-group mb-3"><input type="text" class="form-control" id="zjm" placeholder="请输入助记码" @bind="ZJM" aria-describedby="button-addon2"><button class="btn btn-outline-secondary" type="button" @onclick="GetGoods" id="button-addon2">查询</button></div></div><div class="col-1"></div>
</div>
@code {private string ZJM { get; set; }List<Goods> list = new List<Goods>();void GetGoods(){using (var con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["sqlcon"].ConnectionString)){if (string.IsNullOrWhiteSpace(ZJM)){list = con.Query<Goods>("select top 30 spid,spmch,shpchd,shpgg from spkfk ").ToList();}else{list = con.Query<Goods>("select top 30 spid,spmch,shpchd,shpgg from spkfk where zjm like @zjm ",new {zjm="%"+ZJM+"%" }).ToList();}}}
}
<div class="row"><table class="table table-striped table-hover"><thead><tr class="table-dark"><th scope="col">编号</th><th scope="col">名称</th><th scope="col">产地</th><th scope="col">规格</th></tr></thead><tbody>@foreach (var item in list){<tr><td>@item.spid</td><td>@item.spmch</td><td>@item.shpchd</td><td>@item.shpgg</td></tr>}</tbody></table>
</div>
怎么引入到form窗体中呢？这里有点像之前的winform中引入一个webview，这里换成了BlazorWebView。
using BlazorWinForm.wwwroot;
using Microsoft.AspNetCore.Components.WebView.WindowsForms;
using Microsoft.Extensions.DependencyInjection;
using System.Windows.Forms;namespace BlazorWinForm
{public partial class frmMain : Form{public frmMain(){InitializeComponent();var serviceCollection = new ServiceCollection();serviceCollection.AddBlazorWebView();var blazor = new BlazorWebView(){Dock = DockStyle.Fill,HostPage = "wwwroot/index.html",Services = serviceCollection.BuildServiceProvider(), };blazor.AutoScroll = false;blazor.RootComponents.Add<Query>("#app");Controls.Add(blazor);}}class Goods{public string spid { get; set; }public string spmch { get; set; }public string shpchd { get; set; }public string shpgg { get; set; }}
}
总体下来，这种把winform+c#+html,css,js混合起来编程，即把丰富的前端框架引入进来，让winform表现更加灵活，强大，也不丢失cs架构对当前电脑的控制力(有很多行业是通过exe来对接专有设备的驱动的)。winform的UI之前是通过三方UI控件比如DevExpress来增强的，虽然有WPF，但还是在微软自己画的一个圈圈里转，blazor则是带来了丰富的前端库。另外，与之前winform嵌入webview不一样的是，blazor中的c#，可以方便的和winform来互动，语言相通，直接交流，比如你可以很轻松的在blazor的页里里new一个form出来。
Blazor进winform，是鸡肋还是革新？应该是仁者见仁，智者见智了。
