Questions tagged [invalidoperationexception]

The exception that is thrown when a method call is invalid for the object's current state.

The exception that is thrown when a method call is invalid for the object's current state.

More information is available on Docs.

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IIS WCF net.tcp binding error

I know there are many questions about this, I'we tried them all and it didn't work... I'm using IIS8 on WS8, added net.tcp to protocols list and binding to 808 and I still get this error: System.InvalidOperationException: Could not find a base…
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XNA 4.0 InvalidOperationException was unhandeled

I am using this tutorial to learn a little XNA, and i keep running into problems. I've had to convert alot of the code, since it seems the tutorial do not use XNA 4.0. But lets cut to the chase! float aXPosition = (float)(-mCarWidth / 2 +…
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Getting InvalidOperationException with Entity Framework Code First

I am involved in a project where we map already existing C# code to database using Entity Framework Code First. I am not going to reproduce the code itself here, but I will present some pseudo-code that should cover the same issue. I am trying to…
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Displaying data through session in view in asp.net mvc3

I am working on a ASP.net MVC project and want to display a particular users data which i get as a id through session. According to that id I want to extract all data of particular employee. for that I did this code: My controller's Index method: …
Keren Caelen
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RowLeave Event - Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function

I have DataGridView Control in windows application. I load data and bind it to grid using above code. private void LoadData() { clsData objData = new clsData(); DataTable dtTemp = new System.Data.DataTable(); …
ravidev
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Issue with Sorting a list>, Error: InvalidOperationException

I am trying to sort a generic list, and am getting a InvalidOperationException error Does anyone has suggestions on how to rectify it? List> list is being passed on as a parameter through a function. func( List
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InvalidOperationException when multithreading in WPF

So I'm working on my first multithreaded WPF app. Please bear in mind I have little to no understanding of how to implement multithreading - I've done it in a few apps and always work off the existing code. This is my first attempt at it in WPF…
Ortund
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Why an error message 'InvalidOperationException' has been occured

My code as follows: namespace EntityDAO { public static class StudentDAO { public static Boolean AddStudent(StudentDTO oDto) { string str =System.Configuration.ConfigurationManager.AppSettings["myconn"]; …
Mohibullah
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Why won't this Audio play in Windows Phone 7?

I am trying to play audio in my Silverlight for Windows Phone 7 app. I have an MP3 audio file with its build action set to resource. To play the sound, I use: SoundEffectInstance sfi = null; ... Stream source =…
msbg
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Serializable Class serializes to Xml, but the same Xml won't deserialize

We return instances of the class AuthenticateUserOutput from a WCF web service. So we have this method: public override AuthenticateUserOutput AuthenticateUser(AuthenticateUserInput AuthenticateUserInput) AuthenicateUserOutput is auto…
RoboJ1M
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Operation not valid due to current state of the object error in IronRuby

I have a ruby script that telnets into something and creates an output file. I am trying to call the script by using the following code: ScriptEngine rubyengine = IronRuby.Ruby.CreateEngine(); rubyengine.ExecuteFile(@"\Documents\query.rb"); and am…
Josh Bibb
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InvalidOperationException thrown in the device but not emulator

In my WP7 app, InvalidOperationException is being thrown in the device (while it works fine in emulator). From the stacktrace provided by Microsoft, it seems the source might be following code. Image start_rec = (Image)FindName(start_name); //…
Ashni Goyal
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InvalidOperationException was unhandled by user code Object is currently in use elsewhere .net

I believe I've found a similar case with InvalidOperationException - object is currently in use elsewhere; however, that is using c# where as I'm using .net, and I can't understand how to apply it to my program. My program is an attempt at making a…
Adam
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I try to clean/reset/clear a list in C# but it gives me InvalidOperationException error

This is a part of an static int method: int answer = 0; foreach(int getal in savedNumbers) { Console.WriteLine(getal); answer = answer + getal; savedNumbers.Clear(); // after this line, I'm getting an error. } return answer; Please help…
user1171498
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How do I skip a blank page of a PDF when extracting text using iTextSharp?

My program reads through a PDF and extracts the text. When it reaches a blank page, I get the error "System.InvalidOperationException: Unable to handle Content of type iTextSharp.text.pdf.PdfDictionary", and the program stops. How do I check to see…
boilers222
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