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PowerShellメモ C#コードを実行

Last updated at Posted at 2016-10-25

概要

PowerShellスクリプト中にC#のコードを書いて呼び出すサンプル。

コード

サンプル1
$src = @'
using System;
public static class TestClass1
{
    public static string TestMethod(string name)
    {
        string msg = name + "さん、こんにちは";

        Console.WriteLine(msg);
        return msg;
    }
}
'@

Add-Type -TypeDefinition $src -Language CSharp
[TestClass1]::TestMethod("太郎") > $null
サンプル2
$src = @'
using System;
using System.Linq;
public static class TestClass2
{
    public static void TestMethod()
    {
        var data = new[]
        {
            new {id = 1, name = "taro"},
            new {id = 2, name = "jiro"},
            new {id = 3, name = "saburo"},
        };
        var query = 
            from x in data
            where x.id < 3
            select x.name;

        foreach(var n in query)
        {
            Console.WriteLine(n);
        }
    }
}
'@

Add-Type -TypeDefinition $src -Language CSharp
[TestClass2]::TestMethod()  # taroとjiroが出力される

注意点

C#ソース部分を修正して再実行すると、「型は既に存在している」エラーになる。
簡単な解決方法はPowerShell再起動。

動作確認した環境

  • PowerShell V4 (Windows 8.1)
  • PowerShell V5 (Windows 10)
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