ADO.NET :: Retrieve About 90,000 Recored From Database In LINQ?
Oct 17, 2010
I want to get the customers info and companies of this companies of products they deal with here is my query in linq
var query = from sd in db.Survey_Details
select new
{[code]...
customer table has about 3000 customer who every one of them fill a survey of 2500 product till now survey_details table has about 90,000 recored an will increase by 100% every year this query run good without binding in RowDataBound when i want to work with RowDataBound this is too slow and data never come i think i may take about 5 hours to come
I need to retrive the id of the inserted record to use it with another table as a FK when the user click the button this is my code that insert the record and the id in auto-increment:
[Code]....
I tried to select the id after inserting using a sqlcommand but it gave me the following error The INSERT statement conflicted with the FOREIGN KEY constraint "FK_masc_img_Mascotas". The conflict occurred in database "ads_site", table "dbo.Mascotas", column 'IDMascotas'. The statement has been terminated.
I wish to retrieve data from a DataTable using Linq, and I do this by first creating a DataTable with the data and then using Linq to query:
[Code]....
My problem is, that the column "enddatee" has 'holes', meaning that some rows does not have a value. This means that the convertion to DateTime will fail for some rows. How can I get around that?
i have a link query that retrun all the records that have their status = 'completed' ordered by their ids, but i want to return only three records not all the records
How can I retrieve the row ID immediately as I insert a new record with LINQ? I need to refer back to it to update the row since it will be the only unique data in this particular table ( it's the primary key and the ID number is auto generated)
I'm using the file upload to let the user upload a single file. Here's the code I'm using to then upload to the DB. How do I reverse this process and dowload the image into the control for it to display on a different page? Here's my code for the upload - which I think works but can't confirm until I can see the download since all I see in the DB is "binary data"
I need to know how to extract the result of the attempted LINQ query below and set it equal to the strFile variable.Everything Intellisensed OK here but ine 5 shows a syntax error at the parenthesis.
I have a Timestamp column in my Table. I want to read the date time value and display in UI.
In Linq the Timestamp column is represented as System.Data.Linq.Binary.
I dont know how to retirve date time value in "MM-dd-YYYY" format from this Linq.Binary
- Why I am using Timestamp?.
I want to perform some operations based on the last modified date time of the particular row. Since I am using TimeStamp column in my Table as version column, It will contain the last modified date details, So i want to read the date time value from this time stamp column to do some other operations.
is there any way I can retrieve the identity value (auto generated primary key value), of a column after inserting a new database record using linq to sql? i could i achieve this like this using stored procedure: //***insert some recor*** return @@identity. how do I achieve thesame with linq to sql
I am in a serious trouble right now, i wanted to know that how to write a query in LINQ to SQL to retrieve identity column's current value before inserting any value.
I need this cos i m building a windows app n i need to display this value before inserting a record. I have tried DataContext.ExecuteCommand('DBCC CHECKIDENT (Tablename)') but it returns the number of rows modified.
i have created a table in sql server 2005 with two fields ImgId and ImageURL,where ImgId holds the serial number and Image URL holds the URL of the image file about where it is located in my hard disk.
Now i want to retrieve images from the database using its filepath.
I think i had done everything right,I tried to retrieve images in a gridview but dont know why it doesnt shows anything when i build the code.
Could anyone provide me more info regarding this subject because I'm clueless. Any link, tutorial or anything else would be appreciated. The problem is I don't know where to start, but what I have to do is to import data from Access database to very similar SQL database.
I have a FormView through which I set up the default new, update and delete commands for communicating with an SQL Server database. When the CREATE command is executed the data is added to the database and some images are uploaded to a server and linked to the database.
When I press the Visual Studio's default FormView DELETE command I obviously only delete the selected row in the database and not the images on the server. I marked the uploaded images with images ID + "name" , so I could delete them if I could only retrieve the ID of the row being deleted by the DELETE command. How do I do retrieve the ID of the deleted row in C#?
I have a question regarding how to retrieve an mp3 file stored as a byte[] array from the database and display it in a form and let the user to download/play it?
I have 5 radiobutton list and 5 checkbox list.Data come for this radiobutton list and checkbox list from the database.
now after user selecte items from this control i want to retrive back those data with the price from the database.further more I am creating string from this checkbox list to display image.the string came from radiobuttonlist and checkboxlist values.I
I write the following code but there is an error. I just want to retrive the image which I have save into tha database from the sql server and to display in the picture Box(image)
On my website, I'm using webservice to retrieve the data from (SQL Server) database. To improve performance, I like to use jQuery to retrieve the data from the webservice instead of using C#. The data values should be assigned to the drop-down list which I'm using in the aspx. Can anybody tell me how to do this? I'm a newbie to jQuery.