Dropbox.NET

Dropbox API is a .NET SDK for API v2, which helps you easily integrate Dropbox into your app. The Dropbox .NET SDK is a Portable Class Library that works with multiple platforms, including Windows, Windows Phone, and Mono.

Step 1 Create a WPF Application

Step 2 Install Dropbox.NET SDK in to the project

Step 3 Create App in Dropbox

Step 4 Configure Created App for Access

Step 5 Start Development for API Integration.

DropBoxBase Class

Login Window

XAML

  1. <Window x:Class="DropBoxIntegration.Login"
  2. xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  3. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  4. xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  5. xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  6. xmlns:local="clr-namespace:DropBoxIntegration"
  7. mc:Ignorable="d" WindowStartupLocation="CenterOwner" WindowStyle="ToolWindow"
  8. Title="Login" BorderThickness="2" BorderBrush="#FF333738" Loaded="Window_Loaded">
  9. <Grid>
  10. <Grid.ColumnDefinitions>
  11. <ColumnDefinition Width="457*"/>
  12. <ColumnDefinition Width="30"/>
  13. </Grid.ColumnDefinitions>
  14. <Grid.RowDefinitions>
  15. <RowDefinition Height="30"/>
  16. <RowDefinition Height="131*"/>
  17. </Grid.RowDefinitions>
  18. <Border HorizontalAlignment="Stretch"
  19. VerticalAlignment="Stretch" Margin="2" Grid.Row="1" Grid.ColumnSpan="2" SnapsToDevicePixels="True">
  20. <WebBrowser x:Name="Browser" Navigating="Browser_Navigating"/>
  21. </Border>
  23. </Grid>
  24. </Window>

.CS Class

  1. using Dropbox.Api;
  2. using System;
  3. using System.Collections.Generic;
  4. using System.Linq;
  5. using System.Text;
  6. using System.Threading.Tasks;
  7. using System.Windows;
  8. using System.Windows.Controls;
  9. using System.Windows.Data;
  10. using System.Windows.Documents;
  11. using System.Windows.Input;
  12. using System.Windows.Media;
  13. using System.Windows.Media.Imaging;
  14. using System.Windows.Shapes;
  16. namespace DropBoxIntegration
  17. {
  18. /// <summary>
  19. /// Interaction logic for Login.xaml
  20. /// </summary>
  21. public partial class Login : Window
  22. {
  23. #region Variables
  24. private const string RedirectUri = "https://localhost/authorize";
  25. private string DBAppKey = string.Empty;
  26. private string DBAuthenticationURL = string.Empty;
  27. private string DBoauth2State = string.Empty;
  28. #endregion
  30. #region Properties
  31. public string AccessToken { get; private set; }
  33. public string UserId { get; private set; }
  35. public bool Result { get; private set; }
  36. #endregion
  39. public Login(string AppKey, string AuthenticationURL, string oauth2State)
  40. {
  41. InitializeComponent();
  42. DBAppKey = AppKey;
  43. DBAuthenticationURL = AuthenticationURL;
  44. DBoauth2State = oauth2State;
  45. }
  47. public void Navigate()
  48. {
  49. try
  50. {
  51. if (!string.IsNullOrEmpty(DBAppKey))
  52. {
  53. Uri authorizeUri = new Uri(DBAuthenticationURL);
  54. Browser.Navigate(authorizeUri);
  55. }
  56. }
  57. catch (Exception)
  58. {
  59. throw;
  60. }
  61. }
  63. private void Window_Loaded(object sender, RoutedEventArgs e)
  64. {
  65. Dispatcher.BeginInvoke(new Action(Navigate));
  66. // Navigate();
  67. }
  69. private void Button_Click(object sender, RoutedEventArgs e)
  70. {
  71. try
  72. {
  73. this.Close();
  74. }
  75. catch (Exception)
  76. {
  77. throw;
  78. }
  80. }
  82. private void Browser_Navigating(object sender, System.Windows.Navigation.NavigatingCancelEventArgs e)
  83. {
  84. if (!e.Uri.AbsoluteUri.ToString().StartsWith(RedirectUri.ToString(), StringComparison.OrdinalIgnoreCase))
  85. {
  86. // we need to ignore all navigation that isn't to the redirect uri.
  87. return;
  88. }
  91. try
  92. {
  94. OAuth2Response result = DropboxOAuth2Helper.ParseTokenFragment(e.Uri);
  95. if (result.State != DBoauth2State)
  96. {
  97. return;
  98. }
  100. this.AccessToken = result.AccessToken;
  101. this.Uid = result.Uid;
  102. this.Result = true;
  103. }
  105. catch (ArgumentException ex)
  106. {
  107. }
  109. finally
  110. {
  111. e.Cancel = true;
  112. this.Close();
  113. }
  114. }
  115. }
  116. }

MainWindow

Xaml

  1. <Window x:Class="DropBoxIntegration.MainWindow"
  2. xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  3. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  4. xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  5. xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  6. xmlns:local="clr-namespace:DropBoxIntegration"
  7. mc:Ignorable="d"
  8. Title="MainWindow" Height="321" Width="1024" MinHeight="300" MinWidth="600">
  9. <Grid>
  10. <Grid.RowDefinitions>
  11. <RowDefinition Height="35"/>
  12. <RowDefinition Height="70"/>
  13. <RowDefinition Height="113*"/>
  14. <RowDefinition Height="20"/>
  15. </Grid.RowDefinitions>
  16. <Label Content="Work with your DropBox account" FontSize="18" Foreground="Black" FontWeight="SemiBold" Margin="20,0,5,0"></Label>
  17. <GroupBox x:Name="gbAuthentication" HorizontalAlignment="Stretch" Margin="2" VerticalAlignment="Stretch" Grid.Row="1" Background="White">
  18. <GroupBox.Header>
  19. <Label Content="DropBox Authentication" FontWeight="SemiBold"></Label>
  20. </GroupBox.Header>
  21. <Grid>
  22. <Grid.ColumnDefinitions>
  23. <ColumnDefinition Width="100"/>
  24. <ColumnDefinition Width="100*"/>
  25. <ColumnDefinition Width="100"/>
  26. </Grid.ColumnDefinitions>
  27. <Label Content="App Key: " Grid.Column="0" HorizontalContentAlignment="Right" Margin="2"/>
  28. <TextBox x:Name="txtApiKey" Grid.Column="1" Margin="2" MaxLength="100" Text=""></TextBox>
  29. <Button Content="Authenticate" x:Name="btnApiKey" Grid.Column="2" Margin="2" Click="btnApiKey_Click"></Button>
  30. </Grid>
  32. </GroupBox>
  33. <GroupBox x:Name="gbDropBox" HorizontalAlignment="Stretch" Margin="2" Grid.Row="2" VerticalAlignment="Stretch" Background="White" IsEnabled="false">
  34. <GroupBox.Header>
  35. <Label Content="DropBox Operations" FontWeight="SemiBold"></Label>
  36. </GroupBox.Header>
  37. <Grid>
  38. <Grid.ColumnDefinitions>
  39. <ColumnDefinition Width="05"/>
  40. <ColumnDefinition Width="220*"/>
  41. <ColumnDefinition Width="220*"/>
  42. <ColumnDefinition Width="220*"/>
  43. <ColumnDefinition Width="220*"/>
  44. <ColumnDefinition Width="05"/>
  45. </Grid.ColumnDefinitions>
  46. <Grid.RowDefinitions>
  47. <RowDefinition Height="05"/>
  48. <RowDefinition Height="150*"/>
  49. <RowDefinition Height="05"/>
  50. </Grid.RowDefinitions>
  51. <Button x:Name="btnCreateFolder" Content="Create Folder" HorizontalAlignment="Stretch" Margin="5" VerticalAlignment="Stretch" Grid.Row="1" Grid.Column="1" FontSize="14" Click="btnCreateFolder_Click"/>
  52. <Button x:Name="btlUpload" Content="Upload File" HorizontalAlignment="Stretch" Margin="5" VerticalAlignment="Stretch" Grid.Row="1" Grid.Column="2" FontSize="14" Click="btlUpload_Click"/>
  53. <Button x:Name="btnDownload" Content="Download File" HorizontalAlignment="Stretch" Margin="5" VerticalAlignment="Stretch" Grid.Row="1" Grid.Column="3" FontSize="14" Click="btnDownload_Click"/>
  54. <Button x:Name="btnDelete" Content="Delete File/Directory" HorizontalAlignment="Stretch" Margin="5" VerticalAlignment="Stretch" Grid.Row="1" Grid.Column="4" FontSize="14" Click="btnDelete_Click"/>
  55. </Grid>
  57. </GroupBox>
  59. </Grid>
  60. </Window>

.CS File

  1. using Dropbox.Api;
  2. using System;
  3. using System.Collections.Generic;
  4. using System.Linq;
  5. using System.Text;
  6. using System.Threading.Tasks;
  7. using System.Windows;
  8. using System.Windows.Controls;
  9. using System.Windows.Data;
  10. using System.Windows.Documents;
  11. using System.Windows.Input;
  12. using System.Windows.Media;
  13. using System.Windows.Media.Imaging;
  14. using System.Windows.Navigation;
  15. using System.Windows.Shapes;
  17. namespace DropBoxIntegration
  18. {
  19. /// <summary>
  20. /// Interaction logic for MainWindow.xaml
  21. /// </summary>
  22. public partial class MainWindow : Window
  23. {
  24. #region Variables
  25. private string strAppKey = "[Yor Application App Key]";
  26. private string strAccessToken = string.Empty;
  27. private string strAuthenticationURL = string.Empty;
  28. private DropBoxBase DBB;
  29. #endregion
  31. #region Constructor
  32. public MainWindow()
  33. {
  34. InitializeComponent();
  35. }
  36. #endregion
  38. #region Private Methods
  39. public void Authenticate()
  40. {
  41. try
  42. {
  43. if (string.IsNullOrEmpty(strAppKey))
  44. {
  45. MessageBox.Show("Please enter valid App Key !");
  46. return;
  47. }
  48. if (DBB == null)
  49. {
  50. DBB = new DropBoxBase(strAppKey, "TestApp");
  52. strAuthenticationURL = DBB.GeneratedAuthenticationURL(); // This method must be executed before generating Access Token.
  53. strAccessToken = DBB.GenerateAccessToken();
  54. gbDropBox.IsEnabled = true;
  55. }
  56. else gbDropBox.IsEnabled = false;
  57. }
  58. catch (Exception)
  59. {
  60. throw;
  61. }
  62. }
  63. #endregion
  65. private void btnApiKey_Click(object sender, RoutedEventArgs e)
  66. {
  67. try
  68. {
  69. strAppKey = txtApiKey.Text.Trim();
  70. Authenticate();
  71. }
  72. catch (Exception)
  73. {
  74. throw;
  75. }
  77. }
  79. private void btnCreateFolder_Click(object sender, RoutedEventArgs e)
  80. {
  81. try
  82. {
  83. if (DBB != null)
  84. {
  85. if (strAccessToken != null && strAuthenticationURL != null)
  86. {
  87. if (DBB.FolderExists("/Dropbox/DotNetApi") == false)
  88. {
  89. DBB.CreateFolder("/Dropbox/DotNetApi");
  90. }
  91. }
  92. }
  93. }
  94. catch (Exception ex)
  95. {
  96. ex = ex.InnerException ?? ex;
  97. }
  98. }
  100. private void btlUpload_Click(object sender, RoutedEventArgs e)
  101. {
  102. try
  103. {
  104. if (DBB != null)
  105. {
  106. if (strAccessToken != null && strAuthenticationURL != null)
  107. {
  108. DBB.Upload("/Dropbox/DotNetApi", "Sample-test.jpg", @"D:\Capture4-test.PNG");
  109. }
  110. }
  111. }
  112. catch (Exception)
  113. {
  115. throw;
  116. }
  117. }
  119. private void btnDownload_Click(object sender, RoutedEventArgs e)
  120. {
  121. try
  122. {
  123. if (DBB != null)
  124. {
  125. if (strAccessToken != null && strAuthenticationURL != null)
  126. {
  127. DBB.Download("/Dropbox/DotNetApi", "Sample-test.jpg", @"D:\", "capture4_dwnld.png");
  128. }
  129. }
  130. }
  131. catch (Exception)
  132. {
  134. throw;
  135. }
  136. }
  138. private void btnDelete_Click(object sender, RoutedEventArgs e)
  139. {
  140. try
  141. {
  142. if (DBB != null)
  143. {
  144. if (strAccessToken != null && strAuthenticationURL != null)
  145. {
  146. DBB.Delete("/Dropbox/DotNetApi");
  147. }
  148. }
  149. }
  150. catch (Exception)
  151. {
  152. throw;
  153. }
  154. }
  155. }
  156. }
That’s it. We are done with the integration. Enjoy Coding!