How to change label content with timers throwing InvalidOperationException.

Posted by Guru on Stack Overflow See other posts from Stack Overflow or by Guru
Published on 2010-04-26T07:02:16Z Indexed on 2010/04/26 7:23 UTC
Read the original article Hit count: 239

Filed under:

threads

|

c#

|

.NET

|

timers

|

wpf

Hi there,

I'm making an application and I'm using a timer in that application to change label content in WPF C# .NET.

In timer elapsed event I'm writing the following code

lblTimer.Content = "hello";

but its throwing an InvalidOperationException and gives a message "The calling thread cannot access this object because a different thread owns it."

I'm using .NET framework 3.5 and WPF with C#.

Please help me. Thanks in advance.

© Stack Overflow or respective owner

Related posts about threads

Application threads vs Service threads

as seen on Stack Overflow - Search for 'Stack Overflow'
What are the advantages/disadvantages in placing a lengthy network access code in a thread in an activity or a thread in a service? How would it affect the application? I am writing a streaming audio player and from what I've read so far putting the code in a service will still end up blocking the… >>> More
[newbie]Webservice - Threads - close if no active threads, if any activen, then wait till its compl

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I have an ASP.Net webservice running. When the system date changes, i want to close all the threads and restart them again, if the thread/s aren't doing any work. If any of the thread/s is in the process of doing some work(active threads), then i need to wait till the current thread/s complete… >>> More
Multiple threads or process with threads

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, this is for an assignment so I'm not looking for code. I have to simulate a game where each player has turns and needs to 'pay attention' to what's going on. So far, i know I'll need two threads for each player, one that will sleep until the player's turn and the other paying attention. My… >>> More
Tomcat threads vs Java threads

as seen on Stack Overflow - Search for 'Stack Overflow'
When using java threads, one has to take care of the basic problems that come with concurrency through synchronization etc. AFAIK Tomcat also works with threads to handle its workload. Why is it, that I don't have to think about making my code threadsafe when it is running in Tomcat? >>> More
C# threads - Posting messages between threads

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I am working on a project which involves reusing as well as migrating some of the existing MFC code to C#. The current code in MFC, creates some threads and uses ::PostthreadeMessage() and ON_THREAD_MESSAGE(msg,func) for inter thread asynchronous communication through messages. ::PostthreadeMessage()… >>> More

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More