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.
Questions tagged [invalidoperationexception]
505 questions
0
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0 answers
Socket ReceiveAsync reuse SocketAsyncEventArgs
I have a network equipment to which I connect once using sockets, and the connection is maintained open all the time until application closes.
Now I have a class in C# that encapsulates the communication. There is a method SendMessage to the…
XMight
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0 answers
Canceling delegates on form close (C#)
A quick question about concurrency in C#.
I have in my code the following method to update a textbox:
public void diag(string text)
{
if (InvokeRequired)
{
Invoke(new Action(diag), text);
}
…
Bovaz
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votes
1 answer
How to use Bitmap for live and processing at a time?
I get Bitmap (25 per 1 second) from a camera using imageAvailable envent. I have to show it on a GUI and also procees that Bitmap. So I am using two bitmaps, one for the live and the other for the processing.
The problem is I am getting the…
Balu
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0
votes
1 answer
GUI Freezes - Invalid Operation Exception c#
I have a GUI in c# where you can open log files.
The program have 2 main functions:
setTextMessageTextBox() which updates the GUI when needed (after each operation, giving the appropriate messages)
private static void setTextMessageTextBox(){
…
user3238433
- 41
- 2
0
votes
1 answer
Cannot save song from isolated storage, SaveSong method throws InvalidOperationException error
I'm building a FTP application for Windows Phone 8, and want to save the downloaded songs from the isolated storage to the media library. I check if the file exists in isostore, and it returns true, but when I'm using the SaveSong method it always…
user3744413
- 1
- 1
0
votes
1 answer
Close a form on CheckChanged event
I have this section of code, which opens a form when the box is checked, then closes it when the box is unchecked:
private void chkDupe_CheckedChanged(object sender, EventArgs e)
{
if (chkDupe.Checked == true)
{
input = 1;
…
Ben
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0
votes
2 answers
System.InvalidOperationException setting texbox text
I am using one thread running this code:
try
{
Form1 f = getForm();
f.changePrice(price);
}
catch (Exception e)
{
Console.WriteLine("error: " + e);
}
Here is the changePrice method:
public void changePrice(Int32 price)
{
…
EnginBekar
- 43
- 6
0
votes
0 answers
BackgroudnWorker ProgressChanged InvalidOperationException
When I call to the ProgressChanged method I'm getting an InvalidOperationException I found out on MSDN that this happens because the WorkerReportsProgress is set to false but it is set to true in my program.
This is the BW initializations:
…
Yogevnn
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0
votes
2 answers
ASP.NET MVC Ajax - InvalidOperationException, sequence contains no elements
Whenever I make an Ajax call to a certain method, it gives an InvalidOperationException with the message "sequence contains no elements", which is obvious as I want to verify that it gives an error when entering a non-existing article.
The Ajax…
Zinoex
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votes
0 answers
XmlSerializer invokes InvalidOperationException when parsing custom Element
I have a problem while Parsing a custom element with the XmlSerializer. My custom element looks like this (i removed all properties, it still does not work):
using System.Windows.Controls;
namespace MvvmControlChange.Content.Elements
{
public…
LocalHorst
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0
votes
0 answers
RavenDb Smuggler error during multiple exports
I'm using C# to launch multiple process (ProcessStartInfo) which execute the Raven.Smuggler.exe (all at the same time). This is probably a bad practise (which I am changing soon). However I would like to know if the action of launching muliple…
goamn
- 1,939
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0
votes
3 answers
Event handling raising InvalidOperationException - looking for advice
I am kind of new to programming in this manner - is there a way that I can work around or a recommended practice to using events and handlers?
eg:
class objectA
{
public List handlers;
...
public onActionHappened
{
…
na9090
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votes
1 answer
I get an Exception InvalidOperationException and I don't know why
This is a part of chat with multi users and I want to deserialize in loop so every message I am getting for each user I have a can publish (this is the server side)
public class ServerDLL
{
public TcpClient client { get; set; }
public…
The ice man
- 33
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votes
1 answer
System.InvalidOperationException when managing a dialog
I have encountered an error called System.InvalidOperationException.
Additional information: Specified element is already the logical child of another element. Disconnect it first.
I have searched through internet for the solutions but none of them…
user3481276
- 89
- 10
0
votes
1 answer
EntityFramework 5 - InvalidOperationException when accessing DbContext.ChangeTracker.Entries
in my DbContext implementation if have a method called "IsModified". This is used by the application to show some kind of "Dirty" state. Within the method i access the ChangeTracker of the DbContext like shown below.
If i access the…
raisr
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