I am new to Visual Studio 2010 and ASP.Net, and when I first connected my SQL Server to Visual Studio it created huge files full of my SQL classes (maybe this was LINQ classes), and I accidently deleted/corrupted those files, and now I want it to create those classes again. Can someone tell me how I can do that?
View 5 RepliesI use the class below in my code-behind to connect to my database. How would I (overload?) this class to choose between multiple connection strings (databases)?
Or should I have a separate class for each connection?
[code]....
how make the class for database activities and it can be used in code behind
coz i want avoid the connection opening, closing activities, insert,update etc methods in code behind frequently.
the class should include connection open and closing method, passing values to stored procedures etc.
How should we construct it?
Since I'm using Postgresql and can't use LINQ to SQL, I wrote my own wrapper classes.
This is a part of the Student class:
[code]....
It works now! I replaces all Run methods in the Student class with DB.Run
But I want to know if it will work fine with a lot of people online, not me only. I'm not sure how static things work with ASP.NET, maybe it'll eat a lot of memory?..
i have the following code:
[Code]....
I was trying to implement as above. How can i call this class from the code behind of my page, and call the methods Open and Close connection ?
How do i instantiate the object ?
it's possible to put the database connection settings into a base page class so that I can auto-init them on a page. like this document: [URL] but with instructions in VB.net
View 1 RepliesHow can i create dbml file for MS Access or suggest me any other method so that i can use LINQ with MS Access database.
View 4 RepliesI want to be able to create methods to do stuff like opening the connection to the database.Right now if I want to do that I have to put all the code to open the connection with the database in every class.What I did is create a new class called methods, this class is in the App_code folder.I have researched but don't understand how methods are created and how to call them. If someone can give me an example regarding a database connection method, I might be able to really understand how a method works. Basically, this is the code I have to use everytime I want to open a connection to the database:
string connectionString = ConfigurationManager.ConnectionStrings["dbConn"].ConnectionString;
in my project i would like to save pdf files in database, how to save pdf files in database ? along with that i would like to create create a search page to search for pdf files with PDF file names , how to accoplish these things
View 3 RepliesIs it possible to insert a connection string into a web.config file if it isnt there?Would this work?The connection string is for a APS.NET user login and create account database.
View 3 Repliesi have a table ("WebSettings") that have some information about Website like what is the name of website which theme use and so on i want to creat a class to return the website settings can you give me some information obot what is the best way in this case to get the informations and how can i creat this class?
View 1 RepliesI am preparing for an Access2007 db conversion at the beginning of the year and would like to know what the best process would be for connecting to the sqlserver2005 database. I have read about adding the connection string to the web.config file. I have also read about using ADO.NET and put the connection information into a class and not the web.config file.
I would like to hear from others as to what you have used, are using, or plan on using for a webapp (vs2010), and why so I can get an understanding.
I want to create a LINQ DataContext Class as per Database Design. I getting a problem in some cases.
the syntax to bulid a LINQ class :
[Code]....
Here Table Name Is HardCoded But I my case my Table Name A Changed as Finicial Year Change.So How I Give The TableName As RunTime
I am using VS2008 and oracle 10g ODP.Net. The oracle database that I used in the connection is working and tested it using sql plus.The connection string when used in a GriDView works perfectly. Now when I created a new listview control with the same connection it gives an error.Database schema could not be retrieved for this connection. Please make sure connection settings are correct and the database is online
Object reference not set to an instance of an object at VSDataObjectSupport (478,6)
Class file Conflicts in C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Files is preventing me from building the solution. Even though I try emptying out the folder, each time Visual Studio starts the build process, it brings in the class file in to the temp folder with the same folder name. If I restart the machine or leave it overnight, project build without error. Is there anyway to tell Visual studio to delete/ignore/clean any lingering class files that could be in the temp folder?
Clean solution option in VS doesn't work either. Class file in conflict are from the App_Code folder.
How to create MSI Files or setup files programmatically using MSBuild in VS 2008
View 1 RepliesBelow is my class file.
[Code]....
I'm using the template posted in this thread to generate C# enums from a couple of lookup tables in SQL Server within a class library that contains my DAL.
At the moment, I have the connection string used by the templates embedded an a template include file in the class library. Is there a convenient way to have the template grab the connection string from the main project (WAP)'s web.config without having to include a physical path? Or is there a better way to approach this?
I've also considered creating a SQL CLR assembly which returns a table-valued function containing the enum contents (which would then be defined in C#, not in the database), but I'm not sure what the performance hit would be. Whether or not it's significant will obviously be application-dependent but I'd hate to charge down a crappy path if it's a know best-avoid-this approach.
I need to create temp file on the clint side So, i read that files can be created on the folder of internet temp file. how I can do that?how I can get the path of the temp folder?I need VB code
View 10 RepliesI need to populate a database (SQL Server) with some data from a templated excel document.Here are some approaches:
A) User upload a file.xls or file.csv that the server reads, checks and updates the database (cons:the uploaded file might be too big. file.* needs to be in correct format)
B) User downloads a tool.exe to read and upload file.xls (cons: maintenance of the tool.exe)
C) Use of a web service in excel? (don't know how to do it) but
this article might give you a hint
Which one is the best to use? Are there any others?
connection to server reset after uploadting files more than 5mb.
View 3 RepliesI am using LINQ to SQL files in my class libray since every LINQ to SQL sources file is a seprate file and i have to set database connection string in each class library. Now, i have total 7 class libraires in my project how connection string be passed from web.onfg to LINQ file, so that i don't need to manually change the connection string. lke we did in asp.net 2.0 using connection string property in class file library.
How could we pass the same in LINQ's designer file.
I am Importing an excel file using oledb connection in asp.net.
but it is not working on server.
now i want to read excel file without interop.
How can i do it.
how to store files (pdf and word files) into sql database and how to display that files with an option of "save" , "open" window from sql data base when user click. i am doing project using c# + asp.net web application
View 1 RepliesI ahve a solution with a few dll projects, a winforms testbed and a WCF webservice project. In the data project, I have a base class that does the following:
public class BaseDAO
{
private const string CONNECTION_NAME = "OracleConnectionString";
protected static string GetConnectionString()
{
ConnectionStringSettingsCollection settings =
ConfigurationManager.ConnectionStrings;
string conStr = "";
if (settings != null)
{
foreach(ConnectionStringSettings setting in settings)
{
if (setting.Name == CONNECTION_NAME)
{
conStr = setting.ConnectionString;
}
}
return conStr;
}
else
{
throw new NotImplementedException("The connction string can't be found");
}
}
You might ask, why do I need to loop and check the name against a constant? Well, I have defined the connection string in the service project's web.config, but this above code always find two connection strings, one is a sqlexpress which I guess is a default database of some sort. So, to separate that one against the one I really use, I have to loop through all entries and pick out the one I plan to use. How do I prevent this? Is there a better way to fetch the connection string from the data project?