Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
593 views
in Technique[技术] by (71.8m points)

.net - How to Convert LINQ Comprehension Query Syntax to Method Syntax using Lambda

Is there a tool, process or a solution that will convert the following LINQ Query Syntax to Method Syntax with Lambdas (dot notation)? I would expect the solution to convert the following Query Syntax to a Method Syntax such as this.

var filteredEmployees = 
    from employee in allEmployees
    where employee.DepartmentID < 4 && employee.EmployeeID < 10
    orderby employee.DepartmentID descending,
            employee.LastName descending
    select employee;

To the following

var filteredEmployees2 = allEmployees.Where(employee => ((employee.DepartmentID < 4) && (employee.EmployeeID < 10)))
        .OrderByDescending(employee => employee.DepartmentID)
        .ThenByDescending(employee => employee.LastName);

I'm would like to use this to learn Method Syntax better.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

LINQPad is a good tool for what you need. I "stole" the following screenshot from their website to better illustrate how it works. If you write a query using linq syntax you can click on the button highlighted in red to see the equivalent lambda syntax:enter image description here


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...