InPlaceHostingManager.GetManifestCompleted Event
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Occurs when the deployment manifest has been downloaded to the local computer.
public:
event EventHandler<System::Deployment::Application::GetManifestCompletedEventArgs ^> ^ GetManifestCompleted;public event EventHandler<System.Deployment.Application.GetManifestCompletedEventArgs> GetManifestCompleted;member this.GetManifestCompleted : EventHandler<System.Deployment.Application.GetManifestCompletedEventArgs> Public Custom Event GetManifestCompleted As EventHandler(Of GetManifestCompletedEventArgs) Public Event GetManifestCompleted As EventHandler(Of GetManifestCompletedEventArgs) Event Type
Examples
The following code examples demonstrate how to call the GetManifestAsync method. The handler for the GetManifestCompleted event callback checks to see if the manifest download completed successfully, and if so, prompts the user with additional information about the application. If the user agrees to continue the installation, the handler calls DownloadApplicationAsync.
The following code examples assume that you have already defined and created an instance of InPlaceHostingManager named iphm.
InPlaceHostingManager iphm = null;
public void InstallApplication(string deployManifestUriStr)
{
try
{
Uri deploymentUri = new Uri(deployManifestUriStr);
iphm = new InPlaceHostingManager(deploymentUri, false);
}
catch (UriFormatException uriEx)
{
MessageBox.Show("Cannot install the application: " +
"The deployment manifest URL supplied is not a valid URL. " +
"Error: " + uriEx.Message);
return;
}
catch (PlatformNotSupportedException platformEx)
{
MessageBox.Show("Cannot install the application: " +
"This program requires Windows XP or higher. " +
"Error: " + platformEx.Message);
return;
}
catch (ArgumentException argumentEx)
{
MessageBox.Show("Cannot install the application: " +
"The deployment manifest URL supplied is not a valid URL. " +
"Error: " + argumentEx.Message);
return;
}
iphm.GetManifestCompleted += new EventHandler<GetManifestCompletedEventArgs>(iphm_GetManifestCompleted);
iphm.GetManifestAsync();
}
Dim WithEvents iphm As InPlaceHostingManager = Nothing
Public Sub InstallApplication(ByVal deployManifestUriStr As String)
Try
Dim deploymentUri As New Uri(deployManifestUriStr)
iphm = New InPlaceHostingManager(deploymentUri, False)
MessageBox.Show("Created the object.")
Catch uriEx As UriFormatException
MessageBox.Show("Cannot install the application: " & _
"The deployment manifest URL supplied is not a valid URL." & _
"Error: " & uriEx.Message)
Return
Catch platformEx As PlatformNotSupportedException
MessageBox.Show("Cannot install the application: " & _
"This program requires Windows XP or higher. " & _
"Error: " & platformEx.Message)
Return
Catch argumentEx As ArgumentException
MessageBox.Show("Cannot install the application: " & _
"The deployment manifest URL supplied is not a valid URL." & _
"Error: " & argumentEx.Message)
Return
End Try
iphm.GetManifestAsync()
End Sub
void iphm_GetManifestCompleted(object sender, GetManifestCompletedEventArgs e)
{
// Check for an error.
if (e.Error != null)
{
// Cancel download and install.
MessageBox.Show("Could not download manifest. Error: " + e.Error.Message);
return;
}
// bool isFullTrust = CheckForFullTrust(e.ApplicationManifest);
// Verify this application can be installed.
try
{
// the true parameter allows InPlaceHostingManager
// to grant the permissions requested in the applicaiton manifest.
iphm.AssertApplicationRequirements(true) ;
}
catch (Exception ex)
{
MessageBox.Show("An error occurred while verifying the application. " +
"Error: " + ex.Message);
return;
}
// Use the information from GetManifestCompleted() to confirm
// that the user wants to proceed.
string appInfo = "Application Name: " + e.ProductName;
appInfo += "\nVersion: " + e.Version;
appInfo += "\nSupport/Help Requests: " + (e.SupportUri != null ?
e.SupportUri.ToString() : "N/A");
appInfo += "\n\nConfirmed that this application can run with its requested permissions.";
// if (isFullTrust)
// appInfo += "\n\nThis application requires full trust in order to run.";
appInfo += "\n\nProceed with installation?";
DialogResult dr = MessageBox.Show(appInfo, "Confirm Application Install",
MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
if (dr != System.Windows.Forms.DialogResult.OK)
{
return;
}
// Download the deployment manifest.
iphm.DownloadProgressChanged += new EventHandler<DownloadProgressChangedEventArgs>(iphm_DownloadProgressChanged);
iphm.DownloadApplicationCompleted += new EventHandler<DownloadApplicationCompletedEventArgs>(iphm_DownloadApplicationCompleted);
try
{
// Usually this shouldn't throw an exception unless AssertApplicationRequirements() failed,
// or you did not call that method before calling this one.
iphm.DownloadApplicationAsync();
}
catch (Exception downloadEx)
{
MessageBox.Show("Cannot initiate download of application. Error: " +
downloadEx.Message);
return;
}
}
/*
private bool CheckForFullTrust(XmlReader appManifest)
{
if (appManifest == null)
{
throw (new ArgumentNullException("appManifest cannot be null."));
}
XAttribute xaUnrestricted =
XDocument.Load(appManifest)
.Element("{urn:schemas-microsoft-com:asm.v1}assembly")
.Element("{urn:schemas-microsoft-com:asm.v2}trustInfo")
.Element("{urn:schemas-microsoft-com:asm.v2}security")
.Element("{urn:schemas-microsoft-com:asm.v2}applicationRequestMinimum")
.Element("{urn:schemas-microsoft-com:asm.v2}PermissionSet")
.Attribute("Unrestricted"); // Attributes never have a namespace
if (xaUnrestricted != null)
if (xaUnrestricted.Value == "true")
return true;
return false;
}
*/
Private Sub iphm_GetManifestCompleted(ByVal sender As Object, ByVal e As GetManifestCompletedEventArgs) Handles iphm.GetManifestCompleted
' Check for an error.
If (e.Error IsNot Nothing) Then
' Cancel download and install.
MessageBox.Show("Could not download manifest. Error: " & e.Error.Message)
Return
End If
' Dim isFullTrust As Boolean = CheckForFullTrust(e.ApplicationManifest)
' Verify this application can be installed.
Try
' the true parameter allows InPlaceHostingManager
' to grant the permissions requested in the application manifest.
iphm.AssertApplicationRequirements(True)
Catch ex As Exception
MessageBox.Show("An error occurred while verifying the application. " & _
"Error text: " & ex.Message)
Return
End Try
' Use the information from GetManifestCompleted() to confirm
' that the user wants to proceed.
Dim appInfo As String = "Application Name: " & e.ProductName
appInfo &= ControlChars.Lf & "Version: " & e.Version.ToString()
appInfo &= ControlChars.Lf & "Support/Help Requests: "
If Not (e.SupportUri Is Nothing) Then
appInfo &= e.SupportUri.ToString()
Else
appInfo &= "N/A"
End If
appInfo &= ControlChars.Lf & ControlChars.Lf & _
"Confirmed that this application can run with its requested permissions."
' If isFullTrust Then
' appInfo &= ControlChars.Lf & ControlChars.Lf & _
' "This application requires full trust in order to run."
' End If
appInfo &= ControlChars.Lf & ControlChars.Lf & "Proceed with installation?"
Dim dr As DialogResult = MessageBox.Show(appInfo, _
"Confirm Application Install", MessageBoxButtons.OKCancel, MessageBoxIcon.Question)
If dr <> System.Windows.Forms.DialogResult.OK Then
Return
End If
' Download the deployment manifest.
' Usually, this shouldn't throw an exception unless
' AssertApplicationRequirements() failed, or you did not call that method
' before calling this one.
Try
iphm.DownloadApplicationAsync()
Catch downloadEx As Exception
MessageBox.Show("Cannot initiate download of application. Error: " & downloadEx.Message)
Return
End Try
End Sub
#If 0 Then
Private Function CheckForFullTrust(ByVal appManifest As XmlReader) As Boolean
Dim isFullTrust As Boolean = False
If (appManifest Is Nothing) Then
Throw New ArgumentNullException("appManifest cannot be null.")
End If
Dim xaUnrestricted As XAttribute
xaUnrestricted = XDocument.Load(appManifest) _
.Element("{urn:schemas-microsoft-com:asm.v1}assembly") _
.Element("{urn:schemas-microsoft-com:asm.v2}trustInfo") _
.Element("{urn:schemas-microsoft-com:asm.v2}security") _
.Element("{urn:schemas-microsoft-com:asm.v2}applicationRequestMinimum") _
.Element("{urn:schemas-microsoft-com:asm.v2}PermissionSet") _
.Attribute("Unrestricted") ' Attributes never have a namespace
If xaUnrestricted Then
If xaUnrestricted.Value = "true" Then
Return True
End If
End If
Return False
End Function
#End If
Remarks
Use the Error property of GetManifestCompletedEventArgs to check whether GetManifestAsync completed successfully or returned an error. If Error is null, GetManifestAsync completed successfully, and you can call AssertApplicationRequirements.