C# 名称'；文件名'；在当前上下文中不存在

嗨，我正在尝试构建一个示例android应用程序，它检索提供的文件路径的文件信息。下面是代码

我正在使用2个.cs文件，其中一个是“mainactivity.cs”，其代码如下所示

mainactivity.cs

using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;

namespace ACCESSTIME
{

[Activity (Label = "ACCESSTIME", MainLauncher = true, Icon = "@drawable/icon")]
public class MainActivity : Activity
{
    //int count = 1;

    protected override void OnCreate (Bundle bundle)
    {
        base.OnCreate (bundle);

        // Set our view from the "main" layout resource
        SetContentView (Resource.Layout.Main);

        // Get our button from the layout resource,
        // and attach an event to it
        EditText filepathText = FindViewById<EditText>(Resource.Id.FilePathText);
        Button getinfobutton = FindViewById<Button> (Resource.Id.GetInfoButton);

        string fileinfo = string.Empty; 

        getinfobutton.Click += (object sender, EventArgs e) =>
         {

            fileinfo = GetInfo.Main(filepathText.Text);
        };
     }
  }
}

如果我建立这个，我会得到错误信息
“当前上下文中不存在名称“fileName”

---

请帮助我

您正在评论文件名：

//string fileName = @"";

其次，如果要从命令行获取文件名，请使用：

public static string Main (string fileName)
{
  FileInfo fi = new FileInfo(fileName);

---

你在评论它<代码>//字符串文件名=@“”

public static string Main (string fileName)
{
  FileInfo fi = new FileInfo(fileName);