How could I (/is it possible) to add a custom column to my DataView, and in this column display the result 开发者_如何学编程of a specific calculation.
I wrote something like create table if not exists QuickTest ( id integer primary 开发者_运维百科key NOT NULL,
My web app uses ADO.NET against SQL Server 2008. Database writes happen against a primary (publisher) database, but reads are load balanced across the primary and a secondary (subscriber) database. We
suppose i am having a database table with 20 records and of that i want to display only 10 records in the dataviewgrid contr开发者_JAVA技巧ol, how can i achieve this?You can write a query like this:
I\'ll try to explain. I want to track dirty records in my dataset row that is bound to controls on window (wpf).
The question is: Given a database backend that understands LeftStr and RightStr: where, in a custom ADO.NET provider implementation, would I establish a mapping to the immutable EDM canonical function
How would I covert this query to inline sql or a stored procedure? var a = from arow in context.post where arow.post_id == id && arow.post_isdeleted == false
If i do a select on user.name, user.post, t.name with t be开发者_如何学JAVAing tag_name AS t is there a way to resolve the full name using ADO.NET?
After reading about Enitity Framework , i have some questions: 1] What is the best way to transfer Entities between tiers ?
I\'m opening an Excel worksheet into a DataTable using OleDb like this: string select = string.Format(\"SELECT * FROM [{0}$]\", worksheetName);
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