I have written an external application to drive autocad with a dll that was registered for COM. I have followed this codes to write my application however i have replaced the following code with AddNumbers() method:
public string OpenDWGFile(string MyDWGFilePath)
{
DocumentCollection dm = Application.DocumentManager;
Document doc = null;
if(File.Exists(MyDWGFilePath))
{
doc = dm.Open(MyDWGFilePath, false);
Application.DocumentManager.MdiActiveDocument = doc;
return "This file is exists";
}
else
return "This file is not exist";
}
but when i run my application the autocad software open and then close immediatly and this error message is shown : Exception has been thrown by the target of an invocation.
but if i comment the following lines of my code the application works without any errors:
doc = dm.Open(MyDWGFilePath, false);
Application.DocumentManager.MdiActiveDocument = doc;
You are creating a second instance of the DocumentManager and giving it a reference to an object retrieved from the first one. I think you want to use
dm.MdiActiveDocument = doc;
Related
I have a Blazor Application which had files uploaded to a upload folder on the web server. I am in the process of trying to figure out the code to download an uploaded file in the browser for retrieval and viewing. Right now the code is as below (the download part from code examples on the internet)
public void FileDetailsToolbarClickHandler(Syncfusion.Blazor.Navigations.ClickEventArgs args)
{
string path = null;
string uploads = System.IO.Path.Combine(System.IO.Directory.GetCurrentDirectory(), "wwwroot\\uploads");
path = uploads + "\\" + SelectedFileName;
if (args.Item.Text == "Delete")
{
//Code for Deleting goes here
//UploadRef.Remove();
if (System.IO.File.Exists(path))
{
System.IO.File.Delete(path);
}
FileDetailsService.FileDetailsDelete(SelectedFileId); //NavigationManager.NavigateTo($"/ServiceRequestNotes/servicerequestnoteadd");
NavigationManager.NavigateTo($"/ServiceRequests/serviceRequestsaddedit2/{Id}", forceLoad: true);
}
else
{
// its a download
IFileProvider provider = new PhysicalFileProvider(uploads);
IFileInfo fileinfo = provider.GetFileInfo(path + SelectedFileName);
var readStream = fileinfo.CreateReadStream();
var mimeType = "application/pdf";
return File(readStream, mimeType, SelectedFileName);
}
}
On the last statement I am a getting the following error message
non-invocable member 'File' cannot be used like a method error message
What am I missing or do I need to change or add to have the output from the readstream render to the browser?
The blazor application is a blazor server app not WASM. It does not make use of API controllers.
Any advice?
This is a void method. You can't return anything at all. Also, if you're trying to instantiate a File object, you'd have to use the new keyword.
Using a service account, Google Drive API and Google SpreadSheet API, I create a spreadsheet that i then move to a specific folder, using the following code :
public async Task<File> SaveNewSpreadsheet(Spreadsheet spreadsheet, File folder)
{
try
{
Spreadsheet savedSpreadsheet = await _sheetService.Spreadsheets.Create(spreadsheet).ExecuteAsync();
string spreadsheetId = GetSpreadsheetId(savedSpreadsheet);
File spreadsheetFile = await GetFileById(spreadsheetId);
File spreadsheetFileMoved = await MoveFileToFolder(spreadsheetFile, folder);
return spreadsheetFileMoved;
}
catch (Exception e)
{
_logger.LogError(e, $"An error has occured during new spreadsheet save to Google drive API");
throw;
}
}
public async Task<File> MoveFileToFolder(File file, File folder)
{
try
{
var updateRequest = _driveService.Files.Update(new File(), file.Id);
updateRequest.AddParents = folder.Id;
if (file.Parents != null)
{
string previousParents = String.Join(",", file.Parents);
updateRequest.RemoveParents = previousParents;
}
file = await updateRequest.ExecuteAsync();
return file;
}
catch (Exception e)
{
_logger.LogError(e, $"An error has occured during file moving to folder.");
throw;
}
}
This used to work fine for a year or so, but since today, the MoveFileToFolder request throw the following exception:
Google.GoogleApiException: Google.Apis.Requests.RequestError
Increasing the number of parents is not allowed [403]
Errors [
Message[Increasing the number of parents is not allowed] Location[ - ] Reason[cannotAddParent] Domain[global]
]
The weird thing is that if I create a new service account and use it instead of the previous one, it works fine again.
I've looked for info on this "cannotAddParent" error but I couldn't find anything.
Any ideas on why this error is thrown ?
I have the same problem and filed in issue in the Google Issue Tracker. This is intended behavior, unfortunately. You are no longer able to place a file in multiple parents as in your example. See the linked documentation for migration.
Beginning Sept. 30, 2020, you will no longer be able to place a file in multiple parent folders; every file must have exactly one parent folder location. Instead, you can use a combination of status checks and a new shortcut implementation to accomplish file-related operations.
https://developers.google.com/drive/api/v2/multi-parenting
I am using below code to use autocad object.
Dim acadapp As AcadApplication
acadapp = GetObject(, "AutoCAD.Application")
'''and using below code to create object -------------
acadapp = CreateObject("AutoCAD.Application")
Getting error "Cannot create ActiveX component".
I tried using 18,19 and various combination as below :
acadapp = GetObject(, "AutoCAD.Application.18")
But nothing work.
Please help.
#Locke : Thanks for reply.I tried your soltion as below :
Dim acadType As Type
Try
acadapp =
System.Runtime.InteropServices.Marshal.GetActiveObject("AutoCAD.Application.18.1")
''Above code din't worked so tried below code also
' acadapp = DirectCast(Marshal.GetActiveObject("AutoCAD.Application.18.1"),
'AcadApplication)
Catch ex As Exception
acadType = Type.GetTypeFromProgID("AutoCAD.Application")
acadapp = DirectCast(Activator.CreateInstance(acadType, True), AcadApplication)
End Try
Showing Exception :
Unable to cast COM object of type 'System.__ComObject' to interface type 'AutoCAD.AcadApplication'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{8E75D910-3D21-11D2-85C4-080009A0C626}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Here's what I typically use when dealing with AutoCAD interop. It checks for a running instance, and creates a new one if necessary:
private static AcadApplication GetAcadApp(string progId)
{
// Create the return application
AcadApplication returnApp = null;
try
{
// Try getting a running instance
returnApp = (AcadApplication)Marshal.GetActiveObject(progId);
}
catch (COMException)
{
try
{
// Try creating a new instance
Type acadType = Type.GetTypeFromProgID(progId);
returnApp = (AcadApplication)Activator.CreateInstance(acadType, true);
}
catch (COMException)
{
// Report failure
MessageBox.Show(string.Format("Cannot create object of type \"{0}\"", progId));
}
}
// Return the application
return returnApp;
}
An AcadApplication COM object can be set like this:
// Get/create an AutoCAD instance
var acadApp = getAcadApp("AutoCAD.Application.18");
Regardless of C# or VB.NET, using Marshal.GetActiveObject and Activator.CreateInstance are probably the better ways to approach this.
According to the exception, the problem is not the GetActiveObject() call, but that the returned object doesn't support the interface you're looking for. Most likely reason is that your code references a different version of AcadApplication than the one you're getting back from GetActiveObject(). Change your project to reference the COM library version for the returned AutoCAD instance, and it should work fine.
I want users to upload the .doc files only in the document library.
To do so, I have developed an event receiver in Visual Studio 2010.
My code is as follows:
public override void ItemAdding(SPItemEventProperties properties)
{
try
{
base.ItemAdding(properties);
EventFiringEnabled = false;
if (!properties.AfterUrl.EndsWith("doc"))
{
properties.ErrorMessage = "You are allowed to updload only .doc files";
properties.Status = SPEventReceiverStatus.CancelWithError;
properties.Cancel = true;
}
}
catch (Exception ex)
{
properties.Status = SPEventReceiverStatus.CancelWithError;
properties.ErrorMessage = ex.Message.ToString();
properties.Cancel = true;
}
}
The code is referred from this example.
My problem is that while I am uploading non-doc files it is preventing but with the system error message not the user friendly as defined in properties.ErrorMessage.
How do I solve this?
Please help.
I used the same code you have provided in your question, I get custom error message displayed as shown in below image -
Please provide details of the error you are getting.
I've been trying to read a pre-built file with Car Maintenance tips, there's one in each line of my "Tips.txt" file. I've tried to follow around 4 or 5 different approaches but It's not working, it compiles but I get an exception. Here's what I've got:
using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication())
{
using (StreamReader sr = new StreamReader(store.OpenFile("Tips.txt", FileMode.Open, FileAccess.Read)))
{
string line;
while ((line = sr.ReadLine()) != null)
{
(App.Current as App).MyTips.Insert(new DoubleNode(line));
}
}
}
I'm getting this "Operation not permitted on IsolatedStorageFileStream", from the info inside the 2nd using statement. I tried with the build action of my "Tips.txt" set to resource, and content, yet I get the same result.
Thanks in advance.
Since you've added it to your project directory, you can't read it using Isolated Storage methods. There are various ways you can load the file. One way would be to set the text file's build type to Resource, then read it in as a stream:
//Replace 'MyProject' with the name of your XAP/Project
Stream txtStream = Application.GetResourceStream(new Uri("/MyProject;component/myTextFile.txt",
UriKind.Relative)).Stream;
using(StreamReader sr = new StreamReader(txtStream))
{
//your code
}