| |
by: Jade |
last post by:
Hi, I am trying to create a dataset with 6 tables and 5 relationships created between them. I am creating it in the Form_Load event. However i keep getting the following error...
An unhandled exception of type 'System.ArgumentNullException' occurred in system.data.dll
Additional information: 'column' argument cannot be null.
The code stops on this line...
Dim rel_Booking_CaraBook As New DataRelation("dsFullBooking",...
|
by: Neil |
last post by:
I have an Access 2000 MDB with ODBC linked tables to a SQL Server 7 back
end. I currently have a selections table in the front end file which the
users use to make selections of records. The table has two fields -- primary
key (which matches primary key of main, SQL Server table), and a boolean
field. The table is linked to the main table in a heterogeneous inner join.
I'm looking to move the table to the back end, while still giving each...
|
by: serge |
last post by:
I have all the scrips to create a database. I have a few questions:
1- I am creating a batch file that it will call many lines like:
db2 -td@ -f filename.sql -z output.txt
The order i am using is:
1- Create the database
2- Tables
3- Insert the data
|
by: Nanda |
last post by:
hi,
I am trying to generate parameters for the updatecommand
at runtime.
this.oleDbDeleteCommand1.CommandText=cmdtext;
this.oleDbDeleteCommand1.Connection =this.oleDbConnection1;
this.oleDbDeleteCommand1.Parameters.Add(new
System.Data.OleDb.OleDbParameter("Original_ApplicantName",
dataset.Tables.Columns.DataType, 50,
|
by: Kiran |
last post by:
Hi,
I want to back up my data in some table in SQL server and import it back
using Bulk Load of SQL server 2K.
I can use the following code to backup the data in XML
dataset.WriteXml(@"C:\Data.xml");
dataset.WriteXmlSchema(@"C:\Schema1.xml");
|
| |
by: Shelby |
last post by:
Problem: My company generates its own data export from a propietary
database. These (free) tables can be read in C#.NET using a Visual FoxPro
driver (vfpoledb). I can read each of the six tables into its own datatable,
modify them, and add them to a dataset. It take approximately 15 minutes to
pass that dataset to Crystal Reports (45 minutes if the report uses three
subreport datasets). Then it takes over 7 hours for Crystal to...
|
by: Ian Davies |
last post by:
I have created a database with about 17 tables. I have been creating foreign
keys some of which have worked but when creating others I get the message
below
*************************
1005 (ER_CANT_CREATE_TABLE)
Cannot create table. If the error message refers to errno 150, table
creation failed because a foreign key constraint was not correctly formed.
|
by: RSH |
last post by:
Hi,
I have a situation where I have created a little application that makes an
Access database from a SQL Database for reporting purposes. it does the job
well, but it seems a bit slow. Is there anything that i can do to speed the
app up a bit?
namespace SQLToAccessBackup
|
by: RSH |
last post by:
Hi,
i have a situation where I need to dynamically create objects in a loop. My
question surrounds intantiation naming in such a scenerio.
Below is a snippet that is basically hardcoding each object. My problem is
that I would like to create the objects dynamically but I can't figure out
how to do it
How would I go about dynamically creating the required objects so that I
could be using anywhere from 2 - 10 etc. ?
|
by: astolpho |
last post by:
I am using a slightly outdated reference book on J2EE programming. It gives 2 methods of creating a database used in its casestudies. The first is an ANT script that gives the following output:
D:\original\CaseStudy-2-5\CaseStudy\Day02\exercise>asant database
Buildfile: build.xml
env-user:
prop-user:
set-user:
|
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...
|
| |
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...
|
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,...
|
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...
|
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...
|
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();...
|
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...
|
| |
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
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...
|
2
