要引用的DLL
Interop.MSScriptControl.dll

private void button1_Click(object sender, EventArgs e)
{
//js文件
string path = AppDomain.CurrentDomain.BaseDirectory + "test.js";
string str2 = File.ReadAllText(path);
// 要執行的js方法名(參數)
string fun = string.Format(@"sayHello('{0}')", this.textBox1.Text.Trim());
string result = ExecuteScript(fun, str2);
MessageBox.Show(result);
}
/// <summary>
/// 執行JS
/// </summary>
/// <param name="sExpression">參數體</param>
/// <param name="sCode">JavaScript代碼的字符串</param>
/// <returns></returns>
private string ExecuteScript(string sExpression, string sCode)
{
MSScriptControl.ScriptControl scriptControl = new MSScriptControl.ScriptControl();
scriptControl.UseSafeSubset = true;
scriptControl.Language = "JScript";
scriptControl.AddCode(sCode);
try
{
string str = scriptControl.Eval(sExpression).ToString();
return str;
}
catch (Exception ex)
{
string str = ex.Message;
}
return null;
}