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by: Shabam |
last post by:
A web application of mine developed using C# + MS SQL runs fine normally.
However when I stress test it with a load testing software (using about 60
simultaneous users) some instances start erroring out. I see two different
errors. One is a "Object reference not set to an instance of an object."
error, which appears to always contain the...
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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...
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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: Dave |
last post by:
Tried posting in the Winform Forum without much luck, so posting here...
After inserting a new data row to a DataTable that is bound to a
datagrid, I am unable to change data in a row that is after the newly
added row without getting bizarre results.
I have added the full code for the test below. Create a project drop
in the code and...
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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...
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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...
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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...
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by: Howard Kaikow |
last post by:
I'm using the code below, but an error is not getting trapped.
Where can such errors occur?
In another process?
Try
SomeCode
Catch ex As Exception
Dim strMsg() As String = Split(ex.ToString, vbCrLf)
With lstStuff
For i = 0 To UBound(strMsg)
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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..
...
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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...
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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...
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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. ...
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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...
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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...
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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...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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: 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...
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