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by: Matthew Fitzpatrick |
last post by:
I have a class (MyDataList) which implements CollectionBase and
IBindingList. This class is bound to a data grid.
Whenever my MyDataList is updated (another thread invokes
updates this on the UI thread) the form containing the DataGrid takes focus
and then acts like something set TopMost = true on the containing form!
I can't figure out what is causing this, and it's driving me insane!! Has
anyone encountered this before, and found...
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by: Steve M |
last post by:
I have subclassed CollectionBase. I have also implemented GetEnumerator().
I have tried to set the DataSource of a DataGrid to an instance of my
subclass. However, the items in the grid are not obtained via the Enumerator
that I create in the GetEnumerator() method.
I have tried elplicitly implementing IEnumerable on my sublass as well.
Can anyone help on this? Thanks in advance.
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by: Shannon Richards |
last post by:
Hello All: Can anyone tell what exactly this method is supposed to be used
for? I have a class that derives from CollectionBase. This class overrides
the OnSetComplete() method to raise an event when a child object changes?
example: The overridden OnSetComplete() method in the collection class
Protected Overrides Sub OnSetComplete(ByVal index As Integer, ByVal oldValue
As Object, ByVal newValue As Object)
RaiseEvent Changed ()
End...
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by: SammyBar |
last post by:
Hi,
I'm trying to bind a custom collection class to a data grid, following the
guidelines from the article
http://msdn.microsoft.com/msdnmag/issues/05/08/CollectionsandDataBinding/default.aspx.
The problem is the article is in VisualBasic. I already get the collection
to be recognized as a Data Source by the IDE. It populated the DataGrid
correctly from the fields on the items object of the collection, but I can't
get the DataGrid to...
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by: GingerNinja |
last post by:
Hi Everybody, its about my 4th day on C# and all seems to be going
smoothly however I've started to get into Datagrids and in particular
binding data sources to them. In the documentation it says I can bind
all the usual Datasets etc but it also says I can bind the following:
Any component that implements the IListSource interface
Any component that implements the IList interface
Now I have a class that holds lots of repeating data,...
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by: Pete Davis |
last post by:
A different question this time. I have a DataGrid bound to a collection. Is
there any way for me to allow sorting? The DataGrid.AllowSorting=true
doesn't work, but that's probably because it can't assume the data types and
thus can't sort them.
I thought about implementing IComparable, but I don't see how that would
work since it doesn't apply generically to all the fields/properties of the
class.
Thanks.
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by: Angelos Karantzalis |
last post by:
Hi guys,
I've an Enumerator of object arrays that I need to display on a DataGrid.
Unfortunately, after I set the DataSource to the Enumerator, and call
DataBind(), the DataGrid picks up & displays the public properties of the
object instance :(
I'm not able to specify in advance how big the array will be, or what sort
of data is contained in it unfortunately, so I couldn't just create a
"wrapper" object around the array with public...
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by: Matthew Roberts |
last post by:
Howdy Everyone,
I am having trouble understanding the process of creating a type-safe
collection by inheriting from the CollectionBase class. I have done it
plenty of times, but now that I sit down and look at it, I'm wondering
why it behaves the way it does, and also how to improve its
functionality.
First, understand the basic format of a type-safe collection:
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by: Don |
last post by:
I've been trying to create a custom collection that can be bound to a
combobox via the DataSource property, but I can't seem to get it to work.
I've created a class that implements IList, and it seems to work okay on its
own, but when I try to bind it to a combobox, the combobox doesn't show
anything (and it starts having problems repainting itself). The Datasource
appears to contain my custom collection object, but when I ask for its item...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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