Building a C# Chat Client and Server
A step by step tutorial teaching you how to create your own chat client and chat server easily in C#, for local networks or the Internet.
Getting Hard Drive Information
A C# tutorial showing you how to make use of WMI to extract information on disk drives, such as model, capacity, sectors and serial number.
UPS Shipping Calculator
This tutorial will teach you how to calculate the shipping cost based on the weight, height, length and depth of the box, the distance and the UPS service type.
Create Your Own Rich Text Editor
Creating a Rich Text Editor using JavaScript is easier to do than you might think, thanks to the support of modern browsers; this tutorial will walk you through it.
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XML Database Update Question
I have an XML DataSet that I access as follows: DataSet XMLDataSet; XMLDataSet = new DataSet; XMLDataSet.ReadXml("XMLDataBase.xsd", XmlReadMode.ReadSchema); // maybe make some changes or add new...
| On Sunday, October 25th 2009 at 12:14 AM by Mikep | No Replies |
Use ADO.NET Entity Data Model Utility For Stored Procedures Or Vie
I use ADO.NET Entity Data Model to generate code. I have two stored procedures with complex logic. They return tabular records that are logically related. If I add function importer for the stored...
| On Wednesday, October 7th 2009 at 03:00 PM by Anonymous | No Replies |
Fwd:Learn .NET For $300 Only -- Hurry!! Only 2 Seats Left -- Register
DONOT REPLY TO THIS EMAIL=E2=80=A6.SEND ME THE RESPONSES TO training.css@gmail.com DOTNET TRAINING FOR $300 =E2=80=93 EXCLUSIVELY FOR STUDENTS- SPECIAL BATCH STARTS FROM MONDAY (10/05/09) Hi,...
| On Saturday, October 3rd 2009 at 11:34 AM by Cerebrums | No Replies |
Error When Inserting Using Entity Framework
Hi! I'm writing an application for transforming quite large amounts of data from one database to another and I'm using Entity Framework for all data access. My application runs just fine processing...
| On Monday, September 14th 2009 at 10:04 AM by Anders Ljusberg | No Replies |
Query In A Query
In Access when I have ambiguous joins I can elliminate the ambiguity by creating a query for part then joining it into the first query. Is there a way to do this programmatically from a query created...
| On Monday, May 18th 2009 at 11:00 PM by DBM | No Replies |
Transactions And Try/Catch
I've been unable to find any information on this: If I create a SqlTransaction object with a using block, is calling Rollback completely necessary if an exception occurs? It's hard to imagine that...
| On Tuesday, May 5th 2009 at 03:19 PM by Jonathan Wood | 1 Reply |
Parameters In .net (Accessing MS Access)
In the following code you will note a select statement that says "SELECT * FROM WebQry_List". The MS Access query needs a single parameter passed to it to be able to run. How do you add that parameter...
| On Friday, April 17th 2009 at 11:18 PM by Anonymous | 1 Reply |
Simple Entity Framework Copy Records Operation, Or So I Thought?
Begginig EF, and one simple operation I am trying to do...yet I can not do it simply. I have 2 DB on 2 different servers, trying to copy records from one table (which has no references to other...
| On Wednesday, March 4th 2009 at 09:45 AM by Anonymous | No Replies |
Good Icon For "SQL"?
Hi; We need a good icon that stands for "SQL database." Not Sql Server specifically, but any SQL database. Is there anything out there in common use for that? thanks - dave david@at-at-at@windward...
| On Monday, February 23rd 2009 at 11:02 PM by David | 1 Reply |
SQL Server On Web Site
I want to use sql server standard or workgroup for my web site. Site is on my server. Do I need to buy procesor licence or Server Plus Device CALs or Server Plus User CALs It would be for one or...
| On Monday, February 23rd 2009 at 10:24 AM by Toni | No Replies |
Data Providers Not Listed In Visual Studio
I have installed Visual C# 2008 and the dotnet framework 3.5 and also downloaded and installed MDAC_TYP.EXE version 2.8. But yet when i go to visualstudio and try to make a new connection I only...
| On Monday, February 23rd 2009 at 02:06 AM by Anonymous | No Replies |
Can't Explicitly Close The Connection That SqlBulkCopy Uses
Hi. I am running SQL Server 2005 SP2 on Windows Server 2003. SQL Profiler indicates "Audit Login" when WriteToServer is called but it does not indicate "Audit Logout" until my application has...
| On Tuesday, February 10th 2009 at 11:29 AM by Anonymous | No Replies |
Can't Explicitly Close The Connection That SqlBulkCopy Uses
Hi. It seems that SqlBulkCopy uses its own connection string and I can not figure out how to either disable connection pooling or explicitly close the connection that it uses. I am running SQL...
| On Tuesday, February 10th 2009 at 11:24 AM by Anonymous | No Replies |
About Using DataSets
Hi everybody! I have some questions about using DataSets that I need some help? May you help me? My questions: 1) What's the best practice: a DataSet from each form (a form could use 1 or more...
| On Sunday, February 1st 2009 at 01:41 PM by Willian F. Lopes | 1 Reply |
Performance Of DataRowCollection.Find() ?
Hello, I'm considering keeping in memory a not-that-big DataTable, with a "classic" single-column-primary-key, which is 'Stringish'. Obviously, I will lookup rows based on this key. My question...
| On Thursday, January 29th 2009 at 10:04 AM by AAA | No Replies |
How Copy The Contents Of An ADO Recordset Object Onto Excel Worksh
I' m using VB.NET 2008, VSTO 2.0, Framwork 2.0 and .Net Remoting. when I call the function CopyFromRecordset for my recordset I get an error: System.OutOfMemoryException: Type 'ADODB.InternalFields...
| On Tuesday, January 6th 2009 at 11:41 AM by Anonymous | No Replies |
Oracle Connection Is Closed Exception
We're having the same issue except it is happening a lot. It seems to come up when many users are trying to perform updates to their forecasts at the same time. Data access code is below: public...
| On Monday, January 5th 2009 at 04:18 PM by Josh | No Replies |
Can I XCopy SQL CE 3.5?
Its possible? Which files I need to copy in the bin directory? http://www.alvas.net - Audio tools for C# and VB.Net developers + Christmas Gift
| On Sunday, December 14th 2008 at 04:38 AM by Alexander Vasilevsky | No Replies |
Setting NO COUNT Default On A Connection Only(not The Entire Datab
Is there a way to specify in a connection string that NOCOUNT should be set ON for a specific SQL Server connection? We have some databases that will need to be consolidated onto a sinlge database...
| On Saturday, November 1st 2008 at 02:31 PM by Anonymous | No Replies |
Is ADO.NET Actually A COM Object?
I am finally starting to convert my VB6 project into .Net... I use ADO in the VB6 project and thought I would do the same in the .Net project. However I was told that this is really a COM object?...
| On Saturday, November 1st 2008 at 12:18 PM by Anonymous | No Replies |
Fastest Way To Determine Existence Of Record W Given PK
I'm trying to determine whether a given record already exists in a database table. Each record is rather short, about 10 fields, approx 250 chars or so, but there are quite a few of them. I'm updating...
| On Saturday, October 25th 2008 at 10:11 AM by Bob | No Replies |
Exeception With Data
I encounter a problem in which I can't fetch the value of a column as follows. This happen only in the first column IP_ADDRESS which is defined as VARCHAR(25) in the table. I gate the following error...
| On Saturday, October 4th 2008 at 05:27 AM by Ronny | 1 Reply |
ComplexType Elements Are Not Supported In The Entity Designer
Hi, I was following an example from "How to: Define a Model with Complex Type", in the Defining Advanced Data Models section under ADO.NET Entity Framework\Programming Guide\Entity Framework Tasks...
| On Friday, October 3rd 2008 at 07:44 PM by Anonymous | No Replies |
Linq To SQL Decimal Output Parameters
I am having problems with the SQL generated by LINQ to execute a stored procedure with Decimal output parameters. This simple example illustrates the problem CREATEPROCEDURE ShowLinqBug( @paramValue...
| On Saturday, September 27th 2008 at 10:18 PM by Anonymous | No Replies |
How To Debug A Stored Procedure From ObjectContext.ExecuteFunction
Hi, I am working in ADO.NET 3.5 with ObjectContext and mapping stored procedures to be called via the ExecuteFunction member method. I open the stored procedure from the server explorer, from an...
| On Saturday, September 27th 2008 at 07:23 PM by Anonymous | No Replies |
Cell With Multiple Values?
I've only worked with very simple DataSets and database tables in the past, so please forgive me if this is newbie question. I'm trying to create a DataSet for items that can be associated with any...
| On Wednesday, September 17th 2008 at 06:10 PM by Holy | 1 Reply |
EF - How Do You Update An Entity?
I have a static fa=E7ade class that manages all data in the prototype I'm writing. This is what might've been called the business layer years ago, it performs all CRUD activities on domain objects....
| On Sunday, September 14th 2008 at 03:41 PM by Chris- | No Replies |
Entity Framework Design Question
I am currently in the process of evaluating how I could use the Entity Framework within my application, but ran into a design issue that I was curious how others were handling. In previous systems...
| On Thursday, September 4th 2008 at 07:06 PM by Anonymous | No Replies |
Entity Framework And Stateless Facades
Hi guys, I prefer short-lived objectcontexts for my applications in order for my service layers to be stateless facades so that it can service different types of clients (with minimal changes to...
| On Sunday, August 31st 2008 at 10:49 AM by Dev | No Replies |
Cannot Open Default Database Login Failed
Guru's, Please do help us on this error. We sometimes encouter this error, sometimes we don't. Tried Blogs but the error always appears unexpectedly. Cannot Open user default database failure...
| On Wednesday, August 20th 2008 at 10:29 PM by CypherDrive | No Replies |
Output Parameter Value Is Null After Executing ExecuteReader
This is a multi-part message in MIME format. ------=_NextPart_000_0006_01C90241.AAF0FE20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I wrote some...
| On Tuesday, August 19th 2008 at 09:22 PM by Mircea Ion | No Replies |
OLE DB
I would like to connect an Access database to a web site. Is the OLE DB provider properly mutli threaded to be able to safely connect to an Access database from a web site? I know Access has had problem...
| On Tuesday, August 19th 2008 at 10:51 AM by Anonymous | No Replies |
How To Define The Return Type In A Function With LINQ?
hi colleagues, I would like to know how to define a returntype in a function in following situation. I've got an order and I was returning all information in orderHEader as follow. and it works...
| On Monday, August 18th 2008 at 05:44 AM by mesut | No Replies |
Comparing DataSets
We're trying to minimize the number of postbacks to the server in our web application by allowing users to change rows in a grid on the client side. When they click the submit button, we need to update...
| On Monday, August 11th 2008 at 02:43 PM by Anonymous | No Replies |
DataSet.ReadXml()
I've been toying with DataSet.ReadXml(). I'm able to call this method and load an XML file. However, my data is hierarchical as follows: ... ... ... ... ... ... ... ......
| On Saturday, August 2nd 2008 at 11:34 AM by Jonathan Wood | No Replies |
Search A Row With A Criterium
Hi, I am using method Find of RowCollection (of a DataTable object) to search for a record (row) with criterium "ID = x" (x is a number). ID is Primary Key in the table "table1". The DataTable object...
| On Saturday, August 2nd 2008 at 04:05 AM by Thanh-Nhan Le | No Replies |
Asynchronous Sql Write Ends In Odd Out Of Memory Error.
I am getting the following error when trying to execute an Insert Statement against a SQL database. The query is executed Asynchronousely with the command.BeginExecute() method. The interesting...
| On Wednesday, July 23rd 2008 at 02:53 PM by Anonymous | No Replies |
See Dot Net Interview Questions
..NET database dev questions http://freedownloadablebooks.blogspot.com/2008/03/net-database-dev-questions.html Some general quickies http://freedownloadablebooks.blogspot.com/2008/03/some-general-quickies...
| On Tuesday, July 15th 2008 at 07:48 PM by pandu | No Replies |
MDB Is Not Updated Only Data Set
Good Afternoon, I did the following step by step and i found out that the MDB or Access 2003 Database was not updated. 1. Create a new solution 2. Click Data Sources on the Solution Explorer...
| On Monday, July 14th 2008 at 02:49 AM by CypherDrive | No Replies |
Dot Net Viewers
http://ganesh-freedotnetbooks1.blogspot.com http://ganesh-freedotnetbooks.blogspot.com http://freefreedownloadsoftwares.blogspot.com
| On Sunday, July 6th 2008 at 04:18 AM by anitha | No Replies |
Closing Database Connection In Window Service During System Shutdown
Hi All, I am stuck up in a strange situation. I have a window service responsible for some background database process. Is there any possible solution to close open database connection when server...
| On Saturday, June 28th 2008 at 06:40 AM by Amit | No Replies |
Always Prompted To Save When Any Row Is Modified
Hello, i have a problem relatrive to DataRowState.Unchanged, i have the bellow code in my Save Button called by BSModificada() 'IF ANY CHANGE SaveData() Private Sub BSModificada() Me.Validate...
| On Thursday, June 26th 2008 at 06:13 AM by jtlivio@gmail.com | No Replies |
"Database" Missing In VS C++ 2008 CLR Windows Forms Application
In a Visual Studio 2008 C++ CLR Windows Forms Application, there is only an "Object" icon, but no "Database" icon after Data|Add New Data Source In a Visual Studio 2005 C++ CLR Windows Forms...
| On Thursday, June 26th 2008 at 05:56 AM by rk | No Replies |
LINQ Where 1=0
I have a asp.net gridview with a LinqDatasource. When I do a delete the SQL profiler shows DELETE FROM [dbo].[UsersInRoles] WHERE 0 = 1 The exception is: [System.Data.Linq.ChangeConflictException...
| On Wednesday, June 25th 2008 at 06:13 PM by Anonymous | 3 Replies |
Iiojioji Ojio Jiofer Gergergergerger Gergerg
iiojioji ojio jiofer gergergergerger gergerg gergergergergerger rgrgergerger
| On Monday, June 23rd 2008 at 11:41 AM by iiojioji | No Replies |
Iiojioji Ojio Jiofer Gergergergerger Gergerg
iiojioji ojio jiofer gergergergerger gergerg gergergergergerger rgrgergerger
| On Monday, June 23rd 2008 at 11:41 AM by iiojioji | No Replies |
Accent Insensitive DataTable.Select
I have a DataTable with data in it. I use the Select method to "find" certain rows. The problem with this method is that it performs an Accent Sensitive filter on the data. I need Accent Insensitive...
| On Wednesday, June 4th 2008 at 05:10 AM by joel | No Replies |
SQLParamter Setting.
Hi all, i am having query which is using in operator and there i want to pass integetvalue. say like select * from employee where empid in(1,2,3); here empid i have to pass dynamically so how...
| On Friday, May 30th 2008 at 09:23 AM by Archana | No Replies |
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