<C#>Dropbox APIs

第一步，激活Drive API

首先，申请Dropbox的帐号；其次，在Dropbox for Developers上获得开发所需的App Key和App Sercet。

1、登录Dropbox for Developers网站；2、点击App Console选项，选择Create app；3、点击Send email for verification；4、通过电子邮件验证；5、在Create a new Dropbox Platform app上，选择Dropbox API app；6、填写信息并Create app，就将获得App key和App secret。

第二步，安装Dropbox Client Library

安装一个NuGet包（Dropnet）。如VS2012选择Tools项，再选NuGet Package Manager，接着Package Manager Console。在PM>中填写Install-Package dropnet -Pre。

第三步，编程

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DropNet;

namespace DropNetDemo
{
    public partial class Form1 : Form
    {
        #region Var
        private DropNetClient _dropNetClient;
        #endregion

        #region Private Property
        private DropNetClient m_DropNetClient
        {
            get
            {
                return _dropNetClient ?? (_dropNetClient = new DropNetClient(tbxAppKey.Text, tbxAppSecret.Text));
            }
            set
            {
                _dropNetClient = value;
            }
        }
        #endregion

        public Form1()
        {
            InitializeComponent();
        }

        private void btnLogin_Click(object sender, EventArgs e)
        {
            var callbackUrl = "https://www.dropbox.com/1/oauth/authorize";
            var cancelCallbackUrl = "https://www.dropbox.com/home";
            var size = new Size(1024, 600);

            if (DoOAuth(callbackUrl, cancelCallbackUrl, size) == DialogResult.OK)
            {
                var accessToken = m_DropNetClient.GetAccessToken();
            }
        }

        private DialogResult DoOAuth(string callbackUrl, string cancelCallbackUrl, System.Drawing.Size size)
        {
            using (var dialog = new Form())
            {
                var browesr = new WebBrowser()
                {
                    Dock = DockStyle.Fill
                };

                m_DropNetClient.GetToken();
                var authUrl = m_DropNetClient.BuildAuthorizeUrl();
                browesr.Navigated += (s, ex) =>
                {
                    var url = ex.Url.ToString();
                    if (url.Equals(callbackUrl))
                    {
                        dialog.DialogResult = DialogResult.OK;
                    }
                    else if (url.Equals(cancelCallbackUrl))
                    {
                        dialog.DialogResult = DialogResult.Cancel;
                    }
                };
                browesr.Navigate(authUrl);

                dialog.Size = size;
                dialog.Controls.Add(browesr);

                return dialog.ShowDialog();
            }
        }

        private void tbxAppKey_TextChanged(object sender, EventArgs e)
        {
            m_DropNetClient = null;
        }

        private void tbxAppSecret_TextChanged(object sender, EventArgs e)
        {
            m_DropNetClient = null;
        }
    }
}

最后，F5运行
源自：http://www.dotblogs.com.tw/larrynung/archive/2012/07/24/73580.aspx

http://www.dotblogs.com.tw/larry/nung/archive/2012/08/08/73912.aspx