Windows error 0x80004002, -2147467262

Detailed Error Information

E_NOINTERFACE[1]

MessageNo such interface supported
Declared inwinerror.h

HRESULT analysis[2]

FlagsSeverityFailure
Reserved (R)false
OriginMicrosoft
NTSTATUSfalse
Reserved (X)false
FacilityCode0 (0x000)
NameFACILITY_NULL[2][1]
DescriptionThe default facility code.[2][1]
Error Code16386 (0x4002)

Questions

74votes
10answers

Visual Studio 2015 crashes

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c#
asp.net
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13votes
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winforms
visual-studio-2015
crystal-reports
visual-studio-2017
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9votes
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Azure App Services suddenly pegging at 100% CPU

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com
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office-interop
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windows-server-2012
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6votes
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How can I get my Win32 app running with Wine in Docker?

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docker
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office-2010
office-addins
5votes
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c#
entity-framework
entity-framework-core
table-valued-parameters
5votes
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4votes
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I'm having a strange issue with Wine on macOS 10.13.4. I have Homebrew installed and have installed Wine with brew install wine winetricks. $ wine --version wine-3.0 When I run wineboot --init > log 2>&1 I get a dialog box that says The Wine configuration in /Users/richard/.wine is being updated, [...] read more
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documentum
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c#
excel
interop
vsto
2votes
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linux-mint
wine
winetricks
1vote
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bing-maps
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c#
testing
automated-tests
sap-gui
1vote
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.net
winforms
async-await
webview2
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ef-core-2.2
jet-ef-provider
1vote
0answers

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1vote
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c#
wpf
xaml
exception
casting
1vote
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c#
database
linq
1vote
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multithreading
com
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1vote
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3answers

System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Int32'

The error is System.InvalidCastException occurred HResult=0x80004002 Message=Unable to cast object of type 'System.String' to type 'System.Int32'. Source=<Cannot evaluate the exception source> StackTrace: at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.SimpleNullableDependentKeyValueFactory 1. TryCreateFromBuffer(ValueBuffer valueBuffer, TKey& key) at Microsoft.EntityFrameworkCore.Query.Internal.WeakReferenceIdentityMap`1.CreateIncludeKeyComparer(INavigation navigation, ValueBuffer valueBuffer) I'm not sure how to troubleshoot/solve this error. Checking-on all Exception Settings doesn't break on the [...] read more
entity-framework
0votes
0answers

I need to connect my ASP.net MVC project via ConnectionString to my Google Cloud SQL/PgAdmin 4

I am new here and this is my first question. I have some issues with connecting databases in general, I've only ever succeeded with local databases in Visual Studio. Background Software used for this project: * Visual Studio Enterprise 2019 * PostgreSQL 12(?) * PgAdmin4 * Google Cloud SQL (PostgreSQL [...] read more
c#
asp.net-mvc
postgresql
visual-studio
pgadmin-4
0votes
0answers

Add Control to ChartSheet in codebehind using c# and Excel Interop

I'm trying to add a ComboBox control to a ChartSheet. I can add one to a normal worksheet, but whenever I run the following code and use a ChartSheet I get the error under it. // Create the original worksheet Worksheet sampleGraphSheet = workbook.Worksheets.Add(After: workbook.Sheets[workbook.Sheets.Count]); // Create the graph ChartObjects [...] read more
c#
vsto
excel-interop
0votes
1answer

Naudio Read throws InvalidCast Exception when reading mp4 but not always. Why?

I am making a windows forms that previews waveforms. I use AudioFileReader.Read in the following: A...When I first load the file and read through to save peak files for zoom preview B...When I calculate FFT for the whole audio C...When I draw the waveform The wav/mp3 works fine, but when [...] read more
c#
naudio
0votes
1answer

Outlook VSTO Custom task pane on Reading Pane & Compose window?

I'm trying to follow and combine 2 example projects from Microsoft: https://docs.microsoft.com/en-us/visualstudio/vsto/walkthrough-synchronizing-a-custom-task-pane-with-a-ribbon-button?view=vs-2019 and https://docs.microsoft.com/en-us/visualstudio/vsto/walkthrough-displaying-custom-task-panes-with-e-mail-messages-in-outlook?view=vs-2019 I want to have a custom tab on the main outlook window (Reading Pane) (explorer?) which works. And I want to have a taskpane with buttons that modify the current reply / forward email message. I [...] read more
c#
vsto
office-addins
0votes
2answers

I am getting an error while exporting to Excel

I want to transfer the data from dataGridView to Excel. For this, I added the "Microsoft.Office.Interop.Excel" plug-in to my project. I wrote the necessary codes properly. But when I run the project and click the "Export to Excel" button, I get an error. What should I do? This is my [...] read more
c#
sql-server
excel
visual-studio
export-to-excel
0votes
1answer

Unable to cast COM object of type 'System.__ComObject' to interface type 'Interop.PeachwServer.Application' - Sage SDK 2018 CreateCustomerDemo c#

I'm very new to Sage 50 SDK and when I try to run the sample c# code sample, I get the following error message. 'Save failed: Unable to cast COM object of type 'System.__ComObject' to interface type 'Interop.PeachwServer.Application'. This operation failed because the QueryInterface call on the COM component for [...] read more
c#
api
sdk
sage-erp
sage50
0votes
2answers

Cast is invalid on object

I have this problem, when I try to cast the "batch" object, I am raised exception "Invalid cast". Can you help me out with why? The vault5 object exists and is correct. public void batch(IEdmVault5 vault5) { edmVault11 = (IEdmVault11)vault5; IEdmBatchRefVars batch = default(IEdmBatchRefVars); batch = (IEdmBatchRefVars)edmVault11.CreateUtility(EdmUtility.EdmUtil_BatchRefVars); //some code } [...] read more
c#
solidworksapi
solidworkspdmapi
0votes
0answers

Error instantiating new Microsoft.Office.Interop.Word.Application object (0x80004002)

I am working on a simple C# asp.net Web API that is going to be used to generate Word documents. I am making use of the Microsoft.Office.Interop.Word Nuget package (v 15.0.4797.1003) in this API. I have a very basic method, shown below, which is simply attempting to open an existing [...] read more
c#
asp.net-web-api
office-interop
0votes
0answers

No such interface supported (0x80004002) in .NET Core

I'm trying to port DirectShowLib for .NET Standard. I have no problem while casting Xml2Dex to IXml2Dex interface in .NET Framework 4.6.2. However, I've got InvalidCastException in .NET Core 3.1. COM IMPORT [ComImport, SuppressUnmanagedCodeSecurity, InterfaceType(ComInterfaceType.InterfaceIsDual), Guid("18C628ED-962A-11D2-8D08-00A0C9441E20")] public interface IXml2Dex { // Interface implementation.. } [ComImport, Guid("18C628EE-962A-11D2-8D08-00A0C9441E20")] public class Xml2Dex { [...] read more
c#
.net-core
directshow.net
0votes
1answer

How to get DbSet dynamically in EF Core 3?

Hello I'm trying to do this: I have more classes where user can store the files - path to those files is stored in JSON format in DB and files are stored in folders named as the class (so when class name is Foo then files will be stored in [...] read more
c#
entity-framework-core-3.0
0votes
0answers

How to solve 0x80004002 error on InDesign 2020 COM with C#?

Does anybody knows how to solve the same problem in InDesign 2020 and VS 2019? Extracting InDesign CS4 Graphics using C# and COM I don't have any file tlb or the Scripting Support folder... There is my code: public void IndesignFile(){ try { Type inDesignAppType = Type.GetTypeFromProgID("InDesign.Application.2020"); InDesign.Application myInDesign (InDesign.Application)Activator.CreateInstance(inDesignAppType); [...] read more
c#
com
interop
adobe-indesign
0votes
1answer

Problem / Error with converting M4A Audio File to MP3 using NAudio in C#

I'm in a process of creating a demo for an audio conversion software that I create as a hobby. I wanted converting an M4A (MPEG-4) audio file to an MP3 using a simple GUI for the user to interact. I also implemented a feature that allows the user to play [...] read more
c#
audio
naudio
0votes
0answers

Unable to cast COM object of type 'System.__ComObject' to interface type 'mshtml.HTMLDocument'

trying to attach to an IE browser.. it works for awhile then starts throwing this error... --------------------------- --------------------------- Unable to cast COM object of type 'System.__ComObject' to interface type 'mshtml.HTMLDocument'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{3050F55F-98B5-11CF-BB82-00AA00BDCE0B}' failed due to [...] read more
c#
internet-explorer
microsoft.mshtml
shdocvw.internetexplorer
0votes
0answers

Making an automated pipeline with Windows .exe and scripts with various languages WITHOUT Wine

I have been working on a workflow to process data in order to be used by machine learning models to make predictions. For that I have a few steps in which the first run a windows .exe (https://github.com/mzdb/pwiz-mzdb) and then the others steps are : to modify the previous output [...] read more
windows
docker
pipeline
wine
0votes
1answer

Error thrown when opening e-mails using outlook api

Question: I get the following error message when opening what appear to be valid .MSG files using Outlook API to open emails: > Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Interop.Outlook.MailItem'. This operation failed because the QueryInterface call on the COM component for the interface with [...] read more
c#
outlook
office-interop
outlook-2007
0votes
1answer

Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass' to interface type

seeking for help regarding on crystal report. I'm working on a project using asp.net webforms with crystal report... actually the project is working on my local testing but when I deployed it on our test server, results error shows like this "Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass' to [...] read more
asp.net
webforms
report
crystal-reports-2008
crystal-reports-2010
0votes
1answer

Invalid cast exception Xunit deserialization error

When trying to run a test case that uses the xunit framework through Visual Studio I am currently getting the following error. System.InvalidCastException HResult=0x80004002 Message=Specified cast is not valid. Source=xunit.execution.desktop StackTrace: at Xunit.Serialization.XunitSerializationInfo.GetValue[T](String key) in C:\Dev\xunit\xunit\src\common\XunitSerializationInfo.cs:line 40 at Xunit.Sdk.XunitTestCase.Deserialize(IXunitSerializationInfo data) in C:\Dev\xunit\xunit\src\xunit.execution\Sdk\Frameworks\XunitTestCase.cs:line 177 ... I am the only person in [...] read more
c#
deserialization
xunit
xunit.net
xunit2
0votes
0answers

VB.net Unable to cast COM object of type 'System.__ComObject' to interface type 'Shell32.Shell' -Copy And Replace Files-

> System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'Shell32.Shell'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{34936BA1-67AD-4C41-99B8-8C12DFF1E974}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)). at DisGruntled.Copy_Replace.CopyReplace(Object param) in [...] read more
vb.net
0votes
1answer

Entity Framework 6 App.config file is not created

I was told that > when adding the EF6 nuget package to a project it creates an appropriate config file I've added the EF6 NuGet package to a project, but the App.config file is nowhere to be found. What am I doing wrong, and is the error below a result [...] read more
c#
entity-framework
entity-framework-6
0votes
1answer

multithreading in VSTO

I have a task to provide a button to stop running process and for that sake I am trying to use multithreading but it gave me exception on a certain point I don't understand how to deal with it please provide some solution. Here its code private void btngenerateNew_Click(object sender, [...] read more
c#
multithreading
vsto
0votes
1answer

VS2015: Unable to cast COM object of type 'System.__ComObject' to interface type 'IFabricTestManagementClient4'

I am using VS2015 for this particular project but also using VS2017 for other projects. Installed: Microsoft Azure Service Fabric SDK - 4.0.466.9590 VS Project Target framework: .NET Framework 4.6.2 VS reference System.Fabric: Runtime Version v4.0.30319 - Version 6.0.0.0 When I try to debug the application in VS2015, it turns [...] read more
visual-studio
azure-service-fabric
0votes
2answers

Getting CLR object property raises Unable to cast COM object of type 'System.__ComObject'

I'm trying to get the value of a property via reflection, but end up getting the following exception: > System.Reflection.TargetInvocationException: 'Exception has been thrown by the target of an invocation.' Inner Exception: InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Kinect.Interop.INuiColorCameraSettings'. This operation failed because the [...] read more
c#
com
kinect
0votes
1answer

VSTO: Store __ComObject (Microsoft.Office.Interop.Word.Table) in Database

I would like to store a Microsoft.Office.Interop.Word.Table object in a T-SQL Database. And get the object again from the database to paste in a word document. Its mandatory that all the information, like tag, index, format keep consistent. On the database side I created a [Object] (varbinary(max)) byte[] field. Directly [...] read more
sql
ms-word
vsto
comobject
iconvertible
0votes
1answer

Can't connect to Connected Services Authentication with Azure Active Directory

I'm trying to connect to the Connected Service "Authentication with Azure Active Directory" but Visual Studio throws an error when I click it. Connected Services The Connected Services component 'Azure AD Authentication' failed: (HRESULT:0x80004002) Specified cast is not valid. The error seems to be application specific as I can access [...] read more
c#
.net
visual-studio
azure
razor-pages
0votes
3answers

System.InvalidCastExecption error message when a programm with Interop.photoshop.dll after updating Windows10

After updating to Windows 10, C# program on VisualStudio 2017, which processes images and uses Interop.Photoshop.dll and Interop.PhotoshopTypeLibrary.dll, got following issue : "System.InvalidCastException: Unable to cast COM object of type 'Photoshop.ApplicationClass' to interface type 'Photoshop._Application'. This operation failed because the QueryInterface call on the COM component for the interface with [...] read more
c#
windows-10
photoshop
0votes
0answers

How to use 32-bit COM library in C# from non STA thread and/or 64-bit process

I’m trying to consume a legacy COM components (dll library created probably in C++, 32 bit) in my C# application. I need to get it work in the following scenarios: 1. COM component used in x86 STA thread (e.g. main app thread) 2. COM component used in x86 worker thread [...] read more
c#
dll
com
interop
regsvr32
0votes
1answer

How to fix '80070005 Access is denied' when accessing remote com+ object?

When I try to call method of COM+ object from remote PC I get error: System.InvalidCastException HResult=0x80004002 Message=Unable to cast COM object of type 'System.__ComObject' to interface type 'System.EnterpriseServices.IRemoteDispatch'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{6619A740-8154-43BE-A186-0319578E02DB}' failed due to the [...] read more
c#
com
com+
dcom
0votes
1answer

System.InvalidCastException on Select when using custom ValueConverter

PROBLEM I'm trying to introduce a strongly typed ID in one of my entities. To do so, I followed the instructions on https://andrewlock.net/using-strongly-typed-entity-ids-to-avoid-primitive-obsession-part-3/ The only difference to the instructions above is, that I'm trying to persist my ID as a string instead of a Guid. A short summary of the [...] read more
c#
entity-framework-core
0votes
3answers

Call Azure Service Fabric from outside

I'm playing with Azure Service Fabric and a console app. I simply want my console app to connect to the cluster and do some stuff. The console app try to resolve the service address with the following: static void Main(string[] args) { ServicePartitionResolver resolver = null; try { resolver = [...] read more
c#
dns
azure-service-fabric
0votes
1answer

Moved Development to new machine, now it won't compile

My laptop died so I restored my code to my desktop. I use Xamarin for VS 2017. When I compile I get a "java exited with code 1" error, the logs contain the following: Xamarin.VisualStudio.TastyPackage|Information|0|Hooked up SDB tracing adapter Xamarin.VisualStudio.TastyPackage|Information|0|Initialization finished Xamarin|Information|0|Xamarin - 4.12.3.83-d15-9+23fa80172 Xamarin.VisualStudio.TastyPackage|Information|0|Hooked up SDB tracing adapter Xamarin.VisualStudio.TastyPackage|Information|0|Initialization [...] read more
xamarin
visual-studio-2017
0votes
1answer

How to implement the authorization through token and roles, in WEB API C #, SOAP architecture, through the use of repositories with stored procedures?

How can I implement the authorization through token and roles, in WEB API C #, SOAP architecture, through the use of repositories with stored procedures and dependency injection? public override void OnAuthorization(HttpActionContext actionContext) { if (actionContext.Request.Headers.Authorization == null) { actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized); } else { string autenticationToken = actionContext.Request.Headers.Authorization.Parameter; string [...] read more
c#
asp.net-web-api
0votes
1answer

Getting HTML Table Rows in VB.NET

I am experimenting with ASP.NET WebForms and data. I am able to post data to the page using a small code snipped in the ASPX, but I cannot get the buttons for deleting, editing, and viewing individual records to work. I believe this is because I cannot add runat="server"when I [...] read more
asp.net
vb.net
visual-studio
webforms
0votes
0answers

Visual Studio 2017 (v15.9.14) says "Deploy failed" when attempting to debug sample Xamarin.Forms app

I'm trying to deploy the example app in this tutorial: https://docs.microsoft.com/en-us/xamarin/get-started/first-app/?pivots=win-vs2017 However, I'm unable to get the debugger to work for it. I followed all the steps precisely but nothing seems to work. Here's the log output: > Xamarin.VisualStudio.TastyPackage|Information|0|Hooked up SDB tracing adapter Xamarin.VisualStudio.TastyPackage|Information|0|Initialization finished Xamarin|Information|0|Xamarin - 4.12.3.83-d15-9+23fa80172 Xamarin.VisualStudio.Shell.BuildProjectSettings|Information|0|Settings successfully [...] read more
c#
android
visual-studio
xamarin
xamarin.forms
0votes
2answers

Trying to implement a task scheduler COM handler

The prototype of ITaskHandler::Start is the following: HRESULT ( STDMETHODCALLTYPE Start )( __RPC__in ITaskHandler * This, /* [in] */ __RPC__in_opt IUnknown *pHandlerServices, /* [in] */ __RPC__in BSTR data) How come pHandlerServices is optional - and if I get a NULL (as it's my case) - how can I notify the [...] read more
c
winapi
com
taskscheduler
0votes
0answers

What is the best way to run Windows exe file on web

I am working on the existing project. Here is a exe file, when user open it, it get the config from the same directory will auto downloading the latest files(assets) from server to the current directory. I don't know how the exe run, maybe it just run git pull or [...] read more
php
windows
ubuntu
0votes
1answer

Gremlin query on Cosmos DB: Unable to cast object of type StringField to Compose1Field

We have the issue with Gremlin query on Azure Cosmos DB The query works in Gremlin Console on TinkerPop but Cosmos DB is complaining about it. It seems to be an issue with the last group().by(...) step Not sure if this is a bug or there is some workaround specific [...] read more
azure-cosmosdb
azure-cosmosdb-gremlinapi
0votes
1answer

Efficient way to pass Bitmap into registered COM component

I have registered COM Class and interface written in .NET 2.0 . Now i am looking for a way to pass Bitmap object from WindowsForms .Net 4.5 application into COM component. When i try to do this code: Type type = Type.GetTypeFromCLSID(clsid); source = (IBaseFilter) Activator.CreateInstance(type); public void SetBitmap(Bitmap input) [...] read more
c#
.net
com
regasm
0votes
1answer

IConnectionPoint::Advise does not work any more in Windows 10 "1903" from the non-main thread

We have an application that either runs some COM hosting in the main thread or in a different thread (async), and we would like to connect to this (connectable) object by using the standard ConnectionPoint interfaces in order to get its events. Up to Windows 10 SP 1903, it did [...] read more
multithreading
com
iconnectionpoint
0votes
0answers

Getting Unable to cast COM object of type 'System.__ComObject' to interface type while trying to click on a button

I want to call click event of a button from a web page by using my client c# code. I can see the element as after doing F12 on the page as: <button class="btn btn-primary form-control btn-block" type="button" ng-click="tranCtrl.retrieveTransactionsList('Go')" ng-disabled="tranCtrl.isLoading"> Go </button> My code works for all the input type [...] read more
c#
angularjs
com-interop
0votes
1answer

C# and excel automation, how to use the CopyFromRecordset function

I am trying to populate an excel file with some data from a SQL server, my code is as follows, public static void SQLToExcel(Excel.Workbook xlWorkBook, string SQL, string tFORMAT) { string connectionString = ConfigurationManager.ConnectionStrings["ANSICConnection"].ConnectionString; SqlConnection conn; conn = new SqlConnection(connectionString); conn.Open(); using (SqlCommand cmd = new SqlCommand(SQL, conn)) { SqlDataReader [...] read more
c#
.net
excel-automation
0votes
2answers

Windbg - <HRESULT 0x80004002>, invalid cast, alias as vs. aS

Good day, I have a Windbg script that iterates around the frames of a stack using a .do loop. For each frame it uses !for_each_local and $spat ("@#Local","foo") to match for things I'm interested in getting an initial look at. I then use dx @$t2 = to assign and finally [...] read more
casting
alias
windbg
0votes
0answers

Delete Mutiple ListView SelectedItems in code behind with Entity Framework Core

I have a ListView that displays TitleName from Title table\entity. Upon ListView_OnSelectionChanged, I can Linq query and display a TitlesDetails Panel, and make visible another panel for edit and delete. But I can only delete one item. I've google and tried all I could till frustrated and backed off for [...] read more
c#
listview
uwp
entity-framework-core
0votes
0answers

Unable to cast COM object to Interface type

I have a DLL which is consumed by a 3rd party Application. I am trying to run a long running Task as Async which is failing due to error:- > "Unable to cast COM object of type 'System.__ComObject' to interface type 'IMSRelation.IJAssocRelation'. This operation failed because the QueryInterface call on [...] read more
c#
asynchronous
com
0votes
2answers

How to access C++ COM Object in C# Background worker?

I am developing a common c# COM component (dll) which can be consumed by any COM client. As part of this I m exposing a outgoing interface called ICallback.The client which is using my dll will implement the methods and provide the com object via incoming interface method, For example, [...] read more
c#
multithreading
com
marshalling
mta
0votes
1answer

Fetch Outlook Calendar Mails

In my inbox there are some calendar mail (meeting request from calendar). when application are fetching mail of calendar mail from inbox then it is throwing following error: > Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Interop.Outlook.MailItem'. This operation failed because the QueryInterface call on the [...] read more
c#
-1votes
1answer

Why can't I cast List<object> to List<string> in C#?

Code: object obj = new List<object>() { "a", "b" }; List<string> list = (List<string>)obj; Exception: System.InvalidCastException HResult=0x80004002 Message=Unable to cast object of type 'System.Collections.Generic.List`1[System.Object]' to type 'System.Collections.Generic.List`1[System.String]'. Source=ConsoleApp2 StackTrace: at ConsoleApp2.Program.Main(String[] args) in C:\Users\guoswang\source\repos\ConsoleApp2\ConsoleApp2\Program.cs:line 12 I know how to avoid this, but want to understand the root cause. Cast exception read more
c#
-1votes
2answers

Read value from nested Json object

I am trying to read a value from a nested Json object, but I am getting a Parse error: My Json object: { "MessageId": "f6774927-37cf-4608-b985-14a7d86a38f9", "Time": "2017-04-06T16:28:38.0719933+02:00", "Data": { "ID": { "value": "0008044834" }, "Carrier": { "value": 0 }, "Tool": { "value": 0 } } } var myJsonString = File.ReadAllText(_currentDictory.FullName [...] read more
c#
json
parsing
-1votes
1answer

How to iterate through Excel worksheets in C#?

I have a workbook with multiple sheets and I was trying to iterate through them but it's causing me problems. The code below throws the error: > Microsoft.Office.Tools.Excel.Worksheet'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{297DC8D9-EABD-45A1-BDEF-68AB67E5C3C3}' failed due to the following [...] read more
c#
excel
vsto
-1votes
1answer

Could not read key from registry (Exception from HRESULT: 0x80040150 (REGDB_E_READREGDB)) at Interop.QBFC13.IQBSessionManager

During a deployment of an update to our Web Service that QuickBooks Web Connector calls, we are not having a bunch of issues related to the Interop.QBFC13.IQBSessionManager. Note our code all works in development environment and has worked in the past on our production server. We are running on a [...] read more
c#
quickbooks
qbfc
-1votes
2answers

Unable to cast COM object of type 'System.__ComObject'

enter image description here [https://i.stack.imgur.com/Lalss.jpg] enter image description here [https://i.stack.imgur.com/Njsop.jpg]When I am a casting below code then i got an error Code : string subject = ((Microsoft.Office.Interop.Outlook.MailItem)myInbox.Items[temp]) .Subject.ToString(); > Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Interop.Outlook.MailItem'. This operation failed because the QueryInterface call on the [...] read more
c#
outlook
-1votes
1answer

CopyFromRecordSet has Invalid Cast Exception

I have a dataset produced from an SQL script and I am trying to output one column to a column in Excel. The record set produces one column with a max of 228 records at any given time. Currently this is the code that I am using (in the code [...] read more
excel
vb.net
dataset
-3votes
1answer

SAP: Unable to cast COM object of type 'System.__ComObject' to interface type 'sapfewse.GuiTextField'

I am trying to interface with a SAP gui window using c#. Using this solution here: solution, I have successfully connected to my open GUI window. I can send the command frame.Maximize(); which will maximize the window, as expected. Trouble comes when I attempt to put some text into a [...] read more
c#
-10votes
1answer

vb.net late bindings issue even after setting the variable

Hey all I have the following code thats throwing Late bindings.enter image description here [https://i.stack.imgur.com/oNhTR.png] I thought putting: Dim excelWS As Worksheet excelWS = New Worksheet Before using the variable corrected the late binding issue? UPDATE 1 Would it be something like this? Dim excelRange As Range Dim excelApp As [...] read more
excel
vb.net
binding
office-interop
late-binding

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Sources

  1. winerror.h from Windows SDK 10.0.14393.0
  2. https://msdn.microsoft.com/en-us/library/cc231198.aspx

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