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by: Luc |
last post by:
I am using Visual Studio 2003 and am getting lousy performance after using
a datatable select and then trying to assign a value to a column of the row
that was found:
DataTable dt = new DataTable();
dt.Columns.Add("Number", System.Type.GetType("System.Int32"));
dt.Columns.Add("Value", System.Type.GetType("System.Double"));
for(int...
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by: Mountain Bikn' Guy |
last post by:
When one gets a row from a database (ie, a DataTable), the row contains a
typed value in each column. How is this typically implemented behind scenes.
I want to build this functionality myself. The reason I want to do this is
because I need an in-memory table without any of the overhead of a DataSet
or DataTable.
Thanks!
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by: VMI |
last post by:
We have this huge application that's based on storing tons of data on a
dataTable. The only problem we're having is that storing LOTS of data (1
million records) into a datatable will slow down the system since all this
data will be stored in memory. The performance is really affected with this.
Since we don't really want to redesign...
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by: Bob |
last post by:
I have a name-value pair type of data that I need to search against. It's
to determine what menu item to highlight given the asp.net page name. So
the list has all my page names (unique) and the corresponding menu IDs.
Some pages have the same menu IDs. One every page load, I want to check the
name, and get the menu ID so the menu can be...
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by: pagates |
last post by:
Hi All,
I have a DataTable in a Windows Forms project that I would like to use a
Select statement. The problem is, I'd like to be able to do wildcard
searches (including single charcater searches).
What are my alternatives? I'd rather not have to go back to the database,
unless that is the best way. The DataTable was a performance...
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by: Brett Romero |
last post by:
I fill a DataTable with search results, which take a very long time if
I first clear it. The values come from an object and I map them into
the corresponding table columns. I may have 65000 results. I iterate
through them, create a new row, fill it, and add it to the DataTable
for each interation. This works fine on the first search.
...
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by: Rich |
last post by:
Hello,
I need to store various values that I will need to look up later on. I have
been using hashtables and arraylists. But I can only store 2 items per row
in a hashtable - key, value, and only 1 item in an arraylist. Or, I could
create a class with various members and store that in a collection, or a
structure, ...
I was thinking,...
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by: Dave |
last post by:
Hello,
What is the best way (performance wise) to search for a row in a table?
Let say I have a column named "col1" and what to get the row that the value
of "col1" is "It is me"...
I can set this column as the primary key to use the find method if it worths
it.
So my options are:
1- using the DataTable.Select method and provide a criteria...
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by: jehugaleahsa |
last post by:
Hello:
What is the point of using a DataTable in ASP .NET? We are unsure how
you can use them without 1) rebuilding them every postback, or 2)
taking up precious memory. We are not sure how to store a DataTable in
any other way outside of our servers. In doing so, we leave ourselves
open to large memory requirements. Furthermore, most web...
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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: 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...
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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: 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: 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...
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