Loading Documents from the Web

To load a file from the Web you must first download it to your application using an asynchronous request object such as HttpClient. Then you simply pass the resulting stream to the LoadDocument method or LoadDocumentAsync method. The following code snippet example uses an HTTP request:

Visual Basic
C#

Visual Basic	Copy Code
Private Sub LoadProtectedDocument(stream As System.IO.MemoryStream, password As String) Try stream.Position = 0 _viewer.LoadDocument(stream, password) Catch x As Exception 'if (x.Message.IndexOf("password") > -1) '{ Dim msg = "This file seems to be password-protected." & vbCr & vbLf & "Please provide the password and try again." C1.Silverlight.C1PromptBox.Show(msg, "Enter Password", Function(text, result) If result = MessageBoxResult.OK Then ' try again using the password provided by the user LoadProtectedDocument(stream, text) End If '} 'else '{ 'throw; '} End Function) End Try End Sub

Visual Basic

Copy Code

Private Sub LoadProtectedDocument(stream As System.IO.MemoryStream, password As String)
        Try
            stream.Position = 0
            _viewer.LoadDocument(stream, password)
        Catch x As Exception
            'if (x.Message.IndexOf("password") > -1)
            '{
            Dim msg = "This file seems to be password-protected." & vbCr & vbLf & "Please provide the password and try again."
            C1.Silverlight.C1PromptBox.Show(msg, "Enter Password", Function(text, result)
                  If result = MessageBoxResult.OK Then
                  
                    ' try again using the password provided by the user
                    LoadProtectedDocument(stream, text)
                  End If
                 '}
                    'else
                 '{
                    'throw;
                 '}
            End Function)
        End Try
    End Sub

C#	Copy Code
void LoadProtectedDocument(System.IO.MemoryStream stream, string password) { try { stream.Position = 0; _viewer.LoadDocument(stream, password); } catch (Exception x) { //if (x.Message.IndexOf("password") > -1) //{ var msg = "This file seems to be password-protected.\r\nPlease provide the password and try again."; C1.Silverlight.C1PromptBox.Show(msg, "Enter Password", (text, result) => { if (result == MessageBoxResult.OK) { // try again using the password provided by the user LoadProtectedDocument(stream, text); } }); //} //else //{ // throw; //} }

Copy Code

  
void LoadProtectedDocument(System.IO.MemoryStream stream, string password)
        {
            try
            {
                stream.Position = 0;
                _viewer.LoadDocument(stream, password);
            }
            catch (Exception x)
            {
                //if (x.Message.IndexOf("password") > -1)
                //{
                    var msg = "This file seems to be password-protected.\r\nPlease provide the password and try again.";
                    C1.Silverlight.C1PromptBox.Show(msg, "Enter Password", (text, result) =>
                        {
                            if (result == MessageBoxResult.OK)
                            {
                                // try again using the password provided by the user
                                LoadProtectedDocument(stream, text);
                            }
                        });
                //}
                //else
                //{
                //    throw;
                //}
            }