How to order By multiple columns in linq?
How to order By multiple columns in linq?
Always make use of ThenBy() after OrderBy() because OrderBy() returns an IOrderedEnumerable which then exposes the methods ThenBy() and ThenByDescending() . This means that we can OrderBy on multiple fields by chaining OrderBy() and ThenBy() together.
Is LINQ OrderBy stable?
Yes, they’re definitely stable.
What is OrderBy in Linq?
LINQ OrderBy operator comes first in LINQ Sorting Operators. OrderBy operator sort the sequence (collection) based on particular property in ascending order. We can use OrderBy operator both in Query Syntax and Method Syntax.
How do I sort in Linq?
In LINQ, sorting operators are used to rearrange the given sequence in ascending or descending order based on one or more attributes….There are 5 different types of sorting operators are available in LINQ:
- OrderBy.
- OrderByDescending.
- ThenBy.
- ThenByDescending.
- Reverse.
How do you use ThenBy in Linq?
Here is an example of ThenBy() usage: List strings = new List { “first”, “then”, “and then”, “finally” }; // Order by the last character, then by the first character // Will contain { “and then”, “then”, “first”, “finally” } IEnumerable result = strings. OrderBy(str => str. Last()).
How can I sort two columns in C#?
Sort a list of objects by multiple fields in C#
- Using LINQ. To create a sorted copy of the list, we can use LINQ’s OrderBy() method. To compare objects against subsequent fields, call the ThenBy() method (or ThenByDescending ).
- Using List. Sort method ( System. Collections.
What is OrderBy in C#?
In a query expression, the orderby clause causes the returned sequence or subsequence (group) to be sorted in either ascending or descending order. Multiple keys can be specified in order to perform one or more secondary sort operations. The sorting is performed by the default comparer for the type of the element.
How does Linq OrderBy sort?
OrderBy sorts the values of a collection in ascending or descending order. It sorts the collection in ascending order by default because ascending keyword is optional here. Use descending keyword to sort collection in descending order.
How does OrderBy work in C#?
How does LINQ OrderBy sort?
How does OrderBy ThenBy work?
The ThenBy and ThenByDescending extension methods are used for sorting on multiple fields. The OrderBy() method sorts the collection in ascending order based on specified field. Use ThenBy() method after OrderBy to sort the collection on another field in ascending order.
How to order data by multiple columns in a LINQ query?
In this post, I am going to show how to do ordering when you require to order data by using multiple columns. By using .Orderby (x=>x.Columnname) in a LINQ query, we can easily order data in a source collection.
How to order columns in multiple columns using the same column?
Most new developers make use of the same function twice .Orderby (x=>x.Columnname).Orderby (x=>x.Columnname) and think that will do the ordering in multiple columns. But it always does the order by the column you specified in the last OrderBy () method.
How to orderby on multiple fields in Python?
This means that we can OrderBy on multiple fields by chaining OrderBy () and ThenBy () together. If you don’t want to go for Lambda expression, you can easily achieve multiple ordering: As you can see, in the above statement, after order by, you can add multiple columns and do the ordering on the multiple columns.
How to order queryable queryable by multiple properties?
If you want to order by multiple properties just do it as follows: // We do not have to care if the queryable is already sorted or not. // The order of the Smart* calls defines the order priority queryable.SmartOrderBy (i => i.Property1).SmartOrderByDescending (i => i.Property2);
