當麻許的超技八

// 將傳入目錄全部檔案讀取出來 之後將內容回傳為 string[]

public string[] ReadAllFileContentAndSplitByReturn(string path)

{

    DirectoryInfo di = new DirectoryInfo(path);

    return di.GetFiles().Select(file => File.ReadAllText(file.FullName)).ToArray();

}

// 此處需加上 async

private async void button3_Click(object sender, EventArgs e)

{

    // 控制按下後的 UI 處理

    this.button3.Text = " 取資料中 ";

    this.button3.Enabled = false;

    // 建立一 Task 呼叫

    var readHugeFilesTask = Task<string[]>.Factory.StartNew(() => ReadAllFileContentAndSplitByReturn(@"C:\Users\當麻\Desktop\雜七雜八\Backup_150\"));

    await readHugeFilesTask;

    // 以下為 結束後的處理事件

    this.button3.Text = " 讀取資料";

    this.textBox1.Text = string.Join(Environment.NewLine, readHugeFilesTask.Result);

    this.button1.Enabled = true;

    MessageBox.Show(" 已讀取 " + readHugeFilesTask.Result.Length);

}

private async void button3_Click(object sender, EventArgs e)

{

    bool <>t__doFinallyBodies = true;

    this.button3.Text = " 取資料中 ";

    this.button3.Enabled = false;

    Task<string[]> readHugeFilesTask = Task<string[]>.Factory.StartNew(() => this.ReadAllFileContentAndSplitByReturn(@"C:\Users\當麻\Desktop\雜七雜八\Backup_150\"));

    TaskAwaiter<string[]> CS$0$0001 = readHugeFilesTask.GetAwaiter();

    if (!CS$0$0001.IsCompleted)

    {

        this.<>u__$awaiter13 = CS$0$0001;

        AsyncVoidMethodBuilder.Create().AwaitUnsafeOnCompleted<TaskAwaiter<string[]>, <button3_Click>d__11>(ref CS$0$0001, ref (<button3_Click>d__11) ref this);

        <>t__doFinallyBodies = false;

        return;

        CS$0$0001 = this.<>u__$awaiter13;

    }

    CS$0$0001.GetResult();

    CS$0$0001 = new TaskAwaiter<string[]>();

    this.button3.Text = " 讀取資料";

    this.textBox1.Text = string.Join(Environment.NewLine, readHugeFilesTask.Result);

    this.button1.Enabled = true;

    MessageBox.Show(" 已讀取 " + readHugeFilesTask.Result.Length);

}