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by: SoYouKnowBrig |
last post by:
Hi All,
I am using Microsoft.ApplicationBlocks.Cache.CacheManager to persist a
System.Data.Dataset object. This Dataset object has a DataTable that is
created from an existing DataTable using the Clone() method. Before I
add the new DataTable to the DataSet, I change the DataType of a
DataColumn from System.String to System.Int64. I then add data to the
new table and then add it to the DataSet. Then DataSet is then added to
the Cache....
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by: J |
last post by:
Is there anyway to format a calculated datacolumn? I would like the
following column to display as money (formatted as $#,##0.00). Or how about
simply displaying the column formatted as a number with only 2 decimals
(#,##0.00)?
In the sample below, amount and taxrate are existing DataColumn's.
DataColumn colTax = new DataColumn();
colTax.DataType = System.Type.GetType("System.String");
colTax.ColumnName = "tax";...
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by: John E. |
last post by:
I have a datagrid with one column that is boolean (it is a checkbox column).
So that myDataTable.Column..DataType.UnderlyingSystemType ==
System.Boolean. For printing purposes, I would like to change this from a
boolean to a string, so that I may manipulate the output to read "X" instead
of true, and "" for false. If I attempt to change the DataColumn type
currently, I get an error stating that I cannot change the type of a column
when...
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by: tnks |
last post by:
Hello
i need to save a virtual table (dataset table) into a SQL table
somo one know how to do it ??
(this is part of my code)
Dim sqladapt As SqlDataAdapter
Dim dsOC As New DataSet
Dim dt As New DataTable
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by: JC Voon |
last post by:
Hi:
How to reset the autoincrement value generated by DataTable ?
I've master and detail table, the detail table has a autoincrement
column, each time i add a new master record, i need to reset the
detail table autoincrement column to start from 1.
I set the dataColumn AutoIncrementSeed=0 and AutoIncrementStep=1 each
time i append a new master row, but it seem not work, it still remain
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by: Jay Balapa |
last post by:
Hello,
Iam trying to do the following-
if(myColumn.DataType==typeof(bool))
{
}
this does not work either Type.GetType("System.Boolean") instead of
typeof(bool).
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by: Matt F |
last post by:
I'm trying to do something that seems like it should be pretty simple, but
haven't found a solution. I am trying to add a datacolumn to a datatable
that adds or subtracts a number of days based on another datetime column in
the table. See sample below. How do I do this? Any help would be greatly
appreciated. Thanks
Private Sub CreateDataTable()
dt = New DataTable
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by: DaveP |
last post by:
im Trying to set a Datacolumn type for a new table
boolean is not working, What is the correct waty
//column.DataType = System.Type.GetType"System.Data.SqlTypes.SqlBoolean");
column.DataType = System.Type.GetType"System.Boolean"); //"System.Boolean");
tia
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by: Manuel |
last post by:
Hi to all,
I'm trying to copy a Datacolumn from a table to another, but with this code:
destTable.Columns.Add(srcTable.Column);
I got this error:
Column 'colname' already belongs to another DataTable.
Anyone can help me?
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by: SMH |
last post by:
Hi All,
I am currently learning .Net 2, studying for 70-528. I've hit a bit of
a brick wall with DataColumn.Expression. As I understand it, this can
be used to (For example) concatenate two columns to make a derived
column.
When I run my code, I get this error:
------------
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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: 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: 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: 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: 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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