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by: Junkguy |
last post by:
I'm having difficulty deleting rows from a datagrid. I want to put a "delete"
button on a form and achieve the same functionality as hitting the "delete"
key on the keyboard for the selected row of a datagrid.
I really want to do it generically so I have subclassed datagrid and made my
own delete row method but I can only get it to work for datasources that are
datatables or dataviews.
Specifically when the datasource is a DataSet I...
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by: Christoph |
last post by:
I'm delving into using ADO.NET for the first time. In fact, I've never
done any database work using C# at all so all of this is new to me.
Please bear that in mind if I am asking stupid questions.
In reading the documentation for the "Update()" method of the
SqlDataAdapter class, I see that it "Calls the respective INSERT, UPDATE,
or DELETE statements for each inserted, updated or deleted rows in the
specified array of DataRow objects"....
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by: Mojtaba Faridzad |
last post by:
Hi,
with SetDataBinding( ) a DataGrid shows a DataView. user can select some
rows in the grid by holding cotrol key. when user clicks on Delete button, I
should delete all selected rows. I am trying to delete these lines from the
dataview like this:
for (int i=0; i < dataView.Count; i++)
if (dataGrid.IsSelected(i))
dataView.Delete(i);
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by: Abra |
last post by:
My C# application has a list (ListBox object), connected over a DataView
to a dataset which corresponds to a table from a MySql database. I want
to delete for example 4000-5000 rows from the table, which correspond to
a certain filter.
If I iterate the Rows from the table and check for each one the filter
condition and, if true, I call the Delete() method, it takes several
minutes till the respective rows are deleted. I tried also to...
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by: NDady via DotNetMonster.com |
last post by:
Hi,
I have a datagrid populated from a dataset. On every row in the grid I have
a delete button. When the user presses on the delete button I remove the
row from the dataset and rebind the datagrid.
The problem is that after a couple of delete the index in the dataset does
not match the index in the grid and the wrong record i deleted from the
dataset. How can I solve this Problem? I am using the following procedure:
Private Sub...
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by: Bob Day |
last post by:
I need to delete ALL rows in a dataset and currently use the method in the
code snippet below, which works fine. However, there can be 100,000 rows,
which makes the FILL, DR.Delete and UPDATE take a very long time.
Is there a way to simply delete the entire dataset and then update that to
the datasource more effectinely?
Thanks!
Bob Day
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by: marshallarts |
last post by:
Hello,
I have a datagrid (grdShots) on a form, and a button to allow the user
to delete records from the dataset underlying the grid. My code
appears to work, because the row disappears from the datagrid. But the
delete is not being updated back to the data source, because if I exit
the app then start it again, the record reappears in the grid - it has
not been deleted. Code for deleting the row is as follows. Column 0
in the grid...
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by: Newbie |
last post by:
Can someone help:
Is there a way with ado.net and it's disconnected dataset to delete a
record in a table if you can't specify a unique field in an SQL WHERE
clause. The current Dbase .dbf table that I'm forced to work with does
not have any fields that I can count on as being unique. I know the
index of the row in my dataset table and I have no problem updateing
that dataset datatable, but I still need to update the database with
the...
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by: Manish |
last post by:
The topic is related to MySQL database.
Suppose a table "address" contains the following records
-------------------------------------------------------
| name | address | phone |
-------------------------------------------------------
| mr x | 8th lane | 124364 |
| mr x | 6th lane | 435783 |
| mrs x | 6th lane | 435783 |
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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: 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 synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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: 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: 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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