


Pivot Data using LINQ
In your given scenario, you have a collection containing enums (TypeCode) and User objects that you need to flatten for a grid display. To achieve this, you encounter difficulties when attempting a foreach approach. Fortunately, LINQ offers a more elegant solution.
LINQ Pivot Implementation
Using LINQ, you can pivot the data as follows:
// Assuming you have a collection of items var data = new[] { new { TypeCode = 1, User = "Don Smith" }, new { TypeCode = 1, User = "Mike Jones" }, new { TypeCode = 1, User = "James Ray" }, new { TypeCode = 2, User = "Tom Rizzo" }, new { TypeCode = 2, User = "Alex Homes" }, new { TypeCode = 3, User = "Andy Bates" } }; // Group the data by TypeCode to form columns var columns = from item in data group item by item.TypeCode; // Get the total number of rows based on the maximum number of items in each column int rows = columns.Max(c => c.Count()); // Pivot the data into a two-dimensional array for the grid string[,] grid = new string[rows, columns.Count()]; int rowIndex = 0; foreach (var column in columns) { foreach (var item in column) { grid[rowIndex, column.Key - 1] = item.User; rowIndex++; } rowIndex = 0; } // Print the pivot table Console.WriteLine("Pivot Table:"); for (int i = 0; i <p>This implementation groups the data by TypeCode to form columns, calculates the total rows based on the maximum number of items in each column, and pivots the data into a two-dimensional array suitable for grid display.</p>
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