C#通过Roslyn编写脚本
一、Roslyn添加引用集
通过Nuget添加Microsoft.CodeAnalysis.CSharp 引用集，需要注意.Net Framework4.6.1以上版本。
添加从成功后，引入以下空间命名：
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Scripting;
二、Roslyn 基本操作
class AnalysisTest
{
public async void GetCurrentDateTime()
{
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} 开始获取当前时间");
var s4 = CSharpScript.Create(@"return DateTime.Now.ToString(""yyyy-MM-dd HH:mm:ss:fff"");", ScriptOptions.Default.WithImports("System"));
var result = (await s4.RunAsync()).ReturnValue;
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} {result}");
}
public async void ArithmeticExpression()
{
string expression = "(1+2)*3/4";
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} 计算算数表达式:{expression}");
var res = await CSharpScript.EvaluateAsync(expression);
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} {res}");
}
public async void ArithmeticExpressionParam()
{
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} 测试脚本中的变量:");
var script = CSharpScript.Create("int x=3;int y=1;", ScriptOptions.Default.WithImports("System.Math"));
script = script.ContinueWith("int z=2;");
string expression = "Sqrt(x)+y";
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} 测试Math函数:{expression}");
script = script.ContinueWith("return Sqrt(x)+y-2;");
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} {(await script.RunAsync()).ReturnValue}");
}
public async void DefineFunction()
{
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} 测试脚本中定义函数（勾股定理）:");
var script = CSharpScript.Create("int x=3;int y=4;", ScriptOptions.Default.WithImports("System.Math"));
string script1 = "double PythagoreanTheorem(double x,double y) { return Sqrt(Pow(x,2)+Pow(y,2)); } return PythagoreanTheorem(x,y);";
script = script.ContinueWith(script1);
Console.WriteLine($"{DateTime.Now:HH:mm:ss:fff} {(await script.RunAsync()).ReturnValue}");
}
}
