How do we code common functions for SELECT, INSERT, DELETE & UPDATE operations in Data Access Layer(Using ADO.NET ), If we have many tables in our database?
which is better hard coded DAL or using in-build database handling techniques?
There is one oracle 11g server, I want to create connection from my .Net project. tell me the steps which I need to follow for create connection.
View 2 RepliesEnvironment used - Asp.net MVC 1.0 with c#
Problem - I want to create the linq to oracle in .net mvc / drag & drop the oracle table onto dbml file.
how to do this?
i am very new to the programming and also asp.net. i have an assignment to create a table on webpage the information is coming from mysql database.
View 2 Replieshow can i create a backup table for my MySql base table.my base table name is FAB when ever user store the data into FAB table same records should be stored into back-up table automatically.how can i acheive this.i am really thank full to you if any one provide me solution.
View 3 Replieshow to create variable with max size in pls/sql function
View 2 RepliesI have a problem with mvc 3.
I was following the getting started with mvc3 Tutorial which explains how to add Data to a Database, but I have enounter the following problem.
Data I create using the create form does not end up in the Database I made with Microsoft SQL Server Management Studio Express.
I have followed every step in the tutorial.
how I get the Data in the Databse?
I'm trying to create a dataset linking to Oracle, but I'm having problems getting a case statement to work in the query. It works fine in SQLPlus, Sql developer.
When I try and add the statement it either puts single quotes around the statement, or throws the error 'Invalid or missing expression'.
Here is the query in question:
[Code]....
I'm making a simple forum using MySQL and I use a repeater to display a list of all threads in it. I have two tables for posts, one for threads and one for replies, and I want to sort the threads by either when they were posted or when the last reply was posted in it. My SQL query is really long and hard to read so here's some psuedo code similar to it (easier to understand these column names, etc):
SELECT
threads.id,
threads.title,
threads.timestamp,
users.username,
(SELECT COUNT(*) FROM replies WHERE thread_id = threads.id) AS number_of_replies,
(SELECT COUNT(*) FROM views WHERE thread_id = threads.id) AS number_of_views,
(SELECT timestamp FROM replies WHERE thread_id = threads.id ORDER BY timestamp DESC LIMIT 1) AS last_reply_timestamp
FROM threads
LEFT JOIN users
ON threads.user_id = users.id
ORDER BY ************** DESC
What I do here is I fetch the values id, title, timestamp, the author's username, the number of replies and views for a specific thread, and I also get the timestamp for the last reply to this thread.
Then, what I want to do is sort the whole list so that the threads are displayed in an order matching when either it was posted or the last reply was posted in it (you know, like a normal forum) but I'm not sure how to accomplish this.
I tried this:
ORDER BY CASE WHEN last_reply_timestamp > threads.timestamp THEN last_reply_timestamp ELSE threads.timestamp END DESC
but that, I guess, maybe only looks at the first row and determines which one should be used so the order is not correct.
I'm not sure if it's possible to create a sort of variable that holds the value for each row of the timestamp that applies, if that's possible you could sort by that. For example:
(CASE WHEN last_reply_timestamp > threads.timestamp THEN last_reply_timestamp ELSE threads.timestamp END) AS last_activity_timestamp
...
ORDER BY last_activity_timestamp DESC
So each row has a field "last_activity_timestamp" containing either timestamp, whichever is the later than the other.
Can this be done somehow? How does everyone else solve this? It's so hard to search google because I just get lots of forums but no code.
i want to create a table for storing email like hotmail
I have 2 idea:
1-create table for for all user(user 1 has its table and user 2 also has its table)
2-create one table for all user and stor the email text in the field that used for email text and seperate the text by character like(, or - or ........)
We have to generate an excel sheet with pivot table from ASP.NET Web page.
View 2 Replies(1) SELECT a.HD, a.HEAD, a.SH, a.SUBHEAD, a.TRK, a.TRACK, a.TGT, a.TARGET, a.PDC, a.DT_RELEASE, a.STATUS, a.CO FROM V_HIERARCHY1 a
(2) and Data is
HR HR Rec Records Leave Leave Records HRL.0001 Policy and Process for leave record. 27.06.2010 30.06.2010 WIP Edlink
HR HR Rec Records Leave Leave Records HRL.0002 Quarterly Review 01.07.2010 04.07.2010 Planned Edlink
HR HR DB Database SAL Salary DDS.0001 Calculation of Monthly salary 08.08.2010 09.08.2010 WIP Edlink
HR HR Rec Records Ind Induction Records HRI.0001 Completion of dossiers. 08.07.2010 10.07.2010 WIP Edlink
HR HR DB Database Emp Employee HDE.0001 Offer letter 06.07.2010 09.07.2010 WIP Edlink
IT Info Tech SW Software ERP.Web Web based ERP ISE.0001 Version 1 10.07.2010 12.07.2010 Overdue Edlink
how can i programatically create table in sql2005 from exisiting dbase or dbf file along with data in the files.....
wat i mean is that program shuld read the existing dbf/dbase/excel file,, create table with the same structure and data as in the exisiting dbase/dbf files..
I want to extract an image from a third party Sybase table which has binary data in it.
To store images they use the following query:
SELECT xp_write_file('C:photo-1.gz', col_name) FROM tbl_name
What I am trying to do is convert the binary data stored to a actual physical file using .Net
I wanto to create matrix report dynamically using Microsoft.Office.Interop.Excel.dll so that i can create pivot table and Report from this, how i can create these kind of repots where in user will drag and drop the details and it will create reports.
View 2 RepliesCreate Entity Data Model for MySQL using Visual Web Express 2010?
View 3 RepliesI am trying to design my logic to do this but I want to create a dataSet which will have records from several databases, The records all have the same layout.
I am reagin the connection string paths from a table in a database.
I am asking for your help in trying figure out my logic.
Should I use the connectionString builder in conjunction with a loop to Connect, read a record into a dataset Until therer are no more records to be read from my databse table with the database name/paths tables ?
Here is my beginning code which deals with one database:
[Code]....
i want to develop a data access layer ,it can support multiple database like oracle ,Mssqlserver and Mysql using enterprise library and C#.net 3.5 based on database connection
View 1 RepliesI have a web site which uses one SQL database but the hosting company is very slow sometimes and I got database timeout, login and similar errors. Can I implement my code to use two databases simultaneously? I have stored procedures and the data is updated periodically.
EDIT:
Simply: When dbDefault is down and inaccessible I need to use dbSecondary so the web app keeps running. Ant these two databases must be always same.
EDIT:
Some errors:
A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Timeout expired. The timeout period elapsed prior to obtaining a connection from the pool. This may have occurred because all pooled connections were in use and max pool size was reached.Cannot open database "db" requested by the login. The login failed. Login failed for user 'root'.
How to create create variables/properties in master page, and let sub-pages access them? So my master will have a string property HomeUrl How can any page that uses the master page access this property?
View 2 RepliesI have asp.net button and I want to create a QUnit test that will first create mouseover and then show an alert. How to do this. I tried
test("mouseover",function(){
$("#buttonid").mouseover(function () {
alert('mouseover');
test(true,"Done");
});
});
but it doesnt work.
I am creating a web site through command line. I am able to create a web site with single host address. But i want multiple host address for a website. this is the command I am using iisweb /create D:Test Test.com /d [URL]
View 6 RepliesI'm currently in the process of creating a webshop. This webshop supports theming, but I also want customers to choose a lay-out. I can create multiple masterpages and create a handler to dynamically set the correct master page. But some components, like the shopping cart, are controls which have to be present in the master page and are also used in the aspx pages. The shopping cart control for instance, has an Update method which is called whenever the user adds a product to their cart. So the question is: can I somehow create a default masterpage which has all the components on it, but still be able to create multiple lay-outs. And how should I reference that master page from the aspx pages? I also thought of creating an Interface class which defines the masterpage and it's public components, but I don't know if I can reference an interface from aspx pages.
View 8 RepliesIs is possible to build a form, accept parameters and from THAT construct a new .ascx page AND the code behind for that page? What I'm proposing is having some code snippets that just need parameters added and can then be used to create a web user control that can be added to existing pages. This .ascx file would be a real file after creation, not dynamic every time.
View 1 RepliesI want to create a module base CMS , witch way is better for create modules ? how can I install new modules after build and upload project ?
View 6 Replies
