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by: jim |
last post by:
This line of code returns error 13, cast from 'DBNull' to type 'String' is not valid
If IsDBNull(Clinics.Clinics.Item(A).Workphone) The
<other code
End I
Clinics.Clinics is a dataset that was loaded using a left join from two MS SQL database tables. The workphone element is null because there was no corresponding record from the right side of the join
The generated code for retrieving the value of 'Workphone' as a dataset property...
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by: luna |
last post by:
how to i use isdbnull on two tables ?
im pulling out the data with a stored procedure like this :-
CREATE PROCEDURE search
@search varchar(8)
AS
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by: Paul D. Fox |
last post by:
I have this code snippet below where I'm loading all the labels based upon
the retrieved record from the DataReader. Unfortunatley, some of the values
are null, so I can't explicitly set the labels without checking first. Is
there a better method to write this than using a bunch of "If" statements?
Could it be a function? if so, how would I write it?
'Read the single record
While drLeadFeedback.Read()
If Not...
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by: Edwinah63 |
last post by:
Hi guys,
i have a collection containing the values and metadata about a current
record.
i build it by looping through the recordset as follows:
Public Function NoNull(ByVal Value As Object) As String
Return IIf(IsDBNull(Value), "", Value)
End Function
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by: Jim |
last post by:
I am having a problem with the IsDBNull function. When it checks what
type of value is contained in the parameter that is passed to it, it
does not successfully determine that it has a DBNull value. If I
access the value of what I am going to pass to the IsDBNull function
before I call the IsDBNull function then it does successfully
determine that it has a DBNull value. Below is a page that I am using
to test. Note: that the value for...
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by: Wonder |
last post by:
We have a VB.NET project with a reference to ADO 2.5
When I open it on my machine, I get the following build error: "The
referenced component 'ADODB' has an updated custom wrapper available."
When I double click on it, I get the following dialog appear:
If I click 'No', for every object declared from the ADODB library, I get a
build error as follows: "Reference required to assembly 'ADODB' containing
the type 'ADODB.Connection'. Add...
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by: sck10 |
last post by:
Hello (converting from vb to c#),
Is there a way to test the value of null of a particular field of a dataset
from SQL Server? I am going through a dataset and trying to determine if
the value being sent is Null using IsDBNull. I am using the following:
if (! IsDBNull(spCurrentHighLgt)) this.ltlCHLTitle.Text =
spCurrentHighLgt.toString();
However, I am getting the error that the name "IsDBNull" does not exist in
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by: Brad Isaacs |
last post by:
I am using ASP.NET 2.0 codebehind Visual Basic, Visual Studio 2005
Working with DataSet creating a Data Access Layer via VS 2005.
My error is when the code that is prewritten by VS 2005 Casts to String but
the data inside the column is a NULL.
Code prewritten by visual studio:
<System.Diagnostics.DebuggerNonUserCodeAttribute()_
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by: =?Utf-8?B?TWlrZSBPS0M=?= |
last post by:
VB 2005
All developers face this issue; so I'm sure Microsoft was a solution for it.
What is the built in method to check DBNull in a recordset field? NOT a
typed dataset.
I don't want to modify my sql script because it is created dynamically.
Below I have the old method to check for DBNull and to deal with DBNull in
the recordset. This method of coding is used over 80 times as I have over 80
fields to check for DBNull, so a one...
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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: 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: 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: 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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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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 effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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