Linq xml updating file
Open Visual Studio 2010 and create a Windows Forms Application.Add some UI controls and arrange them as in the following figure.This article provides an introduction to employing LINQ to SQL within a Windows Forms application; the article will address the incorporation of LINQ to SQL into a Windows Forms project, how to use LINQ to SQL to select, insert, update, and delete data, and how to use LINQ to SQL to execute Stored Procedures.Select query examples will demonstrate ordering, filtering, aggregation, returning typed lists, returning single objects and values, and how to query across entity sets (that are essentially related tables associated by foreign keys).
The "select new" in the query defines the result type and then sets each of the properties in the type to a value returned by the query.
This builds on a previous post where I show how to build a simple table with an auto incrementing primary key in each of several SQL dialects. I just can’t bring myself to offer more points than that in this case.
This works in all the engines I evaluated (My SQL, Sqlite, Postgre SQL, Microsoft SQL Server, and, with minor tweaking it works in Oracle) But it works great, and has two of the three benefits from inserting multiple rows at once. Oracle gets only 3 points because they still require that stupid The better way is easy to read, easy to write, easy to maintain, easy to add more rows to the existing query with minial typing. INSERT ALL still has the flexibility of allowing (our should I say requiring) a field signature to be provided for each row, this added flexibility probably equates to extra processing time before the insertions take place, but I can’t look under the hood to see for myself so don’t quote me.
In this handbook, learn how to meet the security, analytics, and testing requirements for Io T applications.
Introduction In this article, I am showing selected values of a Data Grid View into Text Box and saving changes into Database.