Group by Columns, and concatenate 1 column, and do the Sum for 1 Column for List...

Grouping and summing by Linq...

LINQ query grouping without duplication of data...

Select multiple fields group by and sum...

C# group by a list contains another class...

LINQ - GroupBy a key and then put each grouped item into separate 'buckets'...

C# LINQ GroupBy to convert a List to a group with one property as List of values...

How could I LINQ's GroupBy() with a boundary?...

How to get and use source of grouping in LINQ?...

Using LINQ Group Joins in VB.NET...

HOW TO query with linq GROUP BY multiple and SELECT...

how to group by one column only using linq?...

Understanding overloads of GroupBy in Linq...

c# list Group By...

Linq Groupby Elapsed Time...

LINQ Grouping by custom type not working...

Linq Group by Sum Lists Elementwise...

LINQ Group and Count with a Max...

Sorting Groups to display them by date of containing element (LINQ)...

LINQ Group by; How to make it flexible...

Use LINQ to concatenate multiple rows into single row (CSV property)...

Linq group with sum function and nested records...

how to perform groupby in linq on DataTable inside vb code?...

Take Last n Items from a Grouped and Ordered List using Entity Framework...

How does GroupBy in LINQ work?...

Lambda Linq Iqueryable group - add another grouping...

Linq group query gives wrong results...

Group a datatable by sequential values...

linq query to group the items...

Per Invoice show string/int array of unique products...