c# - Proper LINQ where clauses - Stack Overflow
Apr 27, 2015 · When this is a linq-to-object call, multiple where clauses will lead to a chain of IEnumerables that read from each other. Using the single-clause form will help performance here.
c# - Where IN clause in LINQ - Stack Overflow
Jun 6, 2009 · How to make a where in clause similar to one in SQL Server? I made one by myself but can anyone please improve this? public List<State> Wherein(string listofcountrycodes) { ...
LINQ Where with AND OR condition - Stack Overflow
Jan 11, 2016 · from item in db.vw_Dropship_OrderItems where (listStatus != null ? listStatus.Contains(item.StatusCode) : true) && (listMerchants != null ? listMerchants.Contains(item.MerchantId) : true) select item; Might give strange behavior if both listMerchants and listStatus are both null.
LINQ query on a DataTable - Stack Overflow
Aug 14, 2008 · It's because datatables predate LINQ by some number of years. Use a strongly typed datatable instead; a better experience all round than this stringly-typed, intellisense-defeating dt.Rows["FirstName] junk.. With a strongly typed table (add a DataSet type file to your project and create tables inside it in the visual designer) you just write e.g. …
Select Multiple Fields from List in Linq - Stack Overflow
You can select multiple fields using linq Select as shown above in various examples this will return as an Anonymous Type. If you want to avoid this anonymous type here is the simple trick.
c# - LIKE operator in LINQ - Stack Overflow
Mar 21, 2011 · Is there any way to compare strings in a C# LINQ expression similar to SQL's LIKE operator? Suppose I have a string list. On this list I want to search a string. In SQL, I could write: SELECT * F...
c# - Linq select to new object - Stack Overflow
May 25, 2012 · I have a linq query var x = (from t in types select t).GroupBy(g =>g.Type) which groups objects by their type, as a result I want to have single new object containing all of the grouped object...
Linq: adding conditions to the where clause conditionally
But here in Linq I can only think of using an IF condition where I will write the same query thrice, with each IF block having an additional condition. Is there a better way to do this?
Doing multiple joins within a LINQ statement - Stack Overflow
Jul 2, 2015 · Can someone help me translate the following SQL query into a LINQ format. SELECT a.ID, a.HostID, h.URL, a.SourceURL, a.TargetURL, c.Value, a.ExtFlag FROM ...
Convert Linq Query Result to Dictionary - Stack Overflow
I want to add some rows to a database using Linq to SQL, but I want to make a "custom check" before adding the rows to know if I must add, replace or ignore the incomming rows. I'd like to keep the