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by: JR |
last post by:
Hello,
Does anyone know how you can prevent a row full of 'null' values from being
added to the datagrid when a user hits the delete key, deleting the word
(null) which represents the default value of 'null'?
Here's a simple way to reproduce this problem:
1) Add a datagrid to a winform
2) Put this code into the Form1_Load event and run it.
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by: Dave Veeneman |
last post by:
I am just getting into the WinForms data grid, and just about everything I
am seeing on it seems to say that the grid must be bound to an ADO.Net
dataset. I want to use the grid as a simple unbound grid-- all I want to do
is write to the grid, read from it, and allow the user to enter text in
particular cells.
Is the WinForms datagrid a viable candidate for this sort of work? If it is,
can you recommend a resource to help me get up to...
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by: BBFrost |
last post by:
Win2000
..Net 1.1 SP1
c# using Visual Studio
Ok, I'm currently in a "knock down - drag out" tussle with the .Net 1.1
datagrid.
I've come to realize that a 'block' of rows highlighted within a datagrid do
>> not << constitute a set of 'selected' records. Apparently one and only
one row may be 'selected' in a datagrid. By selected row I mean the row
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by: Aaron Smith |
last post by:
I have a DataGrid (winforms) that is bound to a table (MSDE) that has
41,000+ records in it. The form loads relatively fast and I can scroll
all of the data... However, when I click in any column of any row other
than the first one, it takes forever to go to that row, even if it's
just the next one. So I limited the query to only a certain set of data
which returned a little less than a thousand records and the form shows
at the same...
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by: Richard |
last post by:
Rather than all that painting, brush, etc. code to change the styles of a
..NET datagrid to start with and on the fly, I'd rather be able to set a lot
of the stuff in the designer properties of the grid. Would I buy any code
savings buy using an Infragistics/whatever datagrid? Any recommendations for
a best practices doing it with the .NET datagrid? I guess a custom control
dll type data grid with lots of nice properties would be...
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by: Tom S. |
last post by:
VS.Net 2003 V 7.1.3088
..Net Framework V 1.1.4322 SP1
WinXP SP2
I have a WinForms project that I'm having trouble with. I
have a custom user control ( all code based, no visual )
and another class that is a collection of multiple
instances of the control. In ASP.NET, if I wanted to bind
the data of the collection ( each control having it's own
row in the grid ) it was not a problem. I was also able
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by: xlar54 |
last post by:
How can I tell which rows are visible in a datagrid (winforms app)? I
have alot of data in the grid (bound to a datatable), and I need to
refresh that data frequently. (theres no easy way to know what data
has changed), so Im looking at just updating the visible portion of the
grid if this is possible.
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by: =?Utf-8?B?R2VudGlhbiBIaWxh?= |
last post by:
I have a datagrid that I want to be able to allow me to edit only the first
two rows and all the other rows to be read-only.
How can I do that? Any insight is highly appreciated.
I have spent couple of days on research but no luck so far.
Thank you
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by: Peted |
last post by:
Hi
i have a winforms app in vs2008 c#
i have a billingdatagrid on the form, and is shows 4 columns and many
rows of data.
The far left colum shows an arrow to inidcated the currently selected
row.
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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: 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: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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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: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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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: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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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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