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by: Ann Morris |
last post by:
INTRODUCTION
One of the most powerful aspects of .NET and Windows Forms is data
binding. Data binding is the process of associating user interface
(UI) elements with a data source to generate a visual representation
of data. Two types of data binding are available for Windows Forms:
Simple Data Binding and Complex Data Binding.
Simple data binding allows you to bind one data element to a control.
In many situations you want to display...
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by: D Witherspoon |
last post by:
I am developing a Windows Forms application in VB.NET that will use .NET
remoting to access the data tier classes.
A very simple way I have come up with is by creating typed (.xsd) datasets.
For example dsParts.xsd and including that in the data tier. I then will
create a class that looks like this
Public Class CPart
Inherits dsParts
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by: matty.hall |
last post by:
There's a lot of information out there about data-binding UI objects
(i.e. derived from Control) to non-UI custom business objects. Is it
possible to do the same without any UI being involved at all?
Here's an example:
I want to do data binding on some of the properties of a TreeNode
(namely its Name). Unfortunately, TreeNode does not derive from
Control, so it doesn't have the "stock" data binding stuff. I'd like
to create a new...
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by: NicK chlam via DotNetMonster.com |
last post by:
this is the error i get
System.Data.OleDb.OleDbException: Syntax error in INSERT INTO statement.
at System.Data.Common.DbDataAdapter.Update(DataRow dataRows,
DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet, String
srcTable)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet)
at TryThis.Form1.save() in C:\Documents and Settings\Nick\My Documents\...
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by: Simon Verona |
last post by:
I'm not sure if I'm going down the correct route...
I have a class which exposes a number of properties of an object (in this
case the object represents a customer). Can I then use this object to
databind to text boxes etc?
I can't use a dataset as the object has loads of derived logic, for example
updating one property may actually update several database fields for
example.
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by: Larry Lard |
last post by:
In the old days (VB3 era), there was a thing called the Data Control,
and you could use it to databind controls on forms to datasources, and
so (as the marketing speak goes), 'create database applications without
writing a single line of code!!!'. Personally, and I know I wasn't
alone in this, I was always suspicious of this claim, because one
invariably ended up writing huge amounts of code attempting to get the
automagical thing to do...
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by: mjsterz |
last post by:
I've been working with VB .NET for less than a year and this is the
first time I've posted on one of these groups, so let me apologize
beforehand if I'm being unclear, not posting my issue correctly,
posting to the wrong forum, or committing some other sort of faux pas.
My team is developing a Windows Forms application using VS 2005 with
SQL Server 2005 on the back end and we're having a problem using
ComboBoxes data bound to lookup...
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by: Rolf Welskes |
last post by:
Hello,
I have an ObjectDataSource which has as business-object a simple array of
strings. No problem.
I have an own (custom) control to which I give the DataSourceId and in the
custom-control so I get the ObjectDataSource. No problem
.....
ObjectDataSource src = .... //is ok i have it
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by: Anil Gupte |
last post by:
After reading a tutorial and fiddling, I finally got this to work. I can
now put two tables created with a DataTable class into a DataRelation.
Phew! And it works!
Dim tblSliceInfo As New DataTable("SliceInfo")
Dim tblSliceRatings As New DataTable("SliceRatings")
'.... All the adding datacolumns, datarows, etc. goes here..
DatasetInit.Tables.Add(tblSliceInfo)
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by: Max |
last post by:
Hello,
I made a windows form with a combo box and 4 text boxes. All 5 objects should get their data from a data set which is populated
in the form load method. The combo box has item ids. When the users selects an item from the combo box I'd like the 4 text boxes to
get populated with the corresponding item information from the same dataset table row that the combo box is pulling it's info from.
Is there an easy way of doing this besides...
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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: 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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