The GridView tries to store the keys in the fastest way. When a user selects a several rows, the grid saves the selected keys. However, when a user selects all rows, the grid begins to add only unselected row keys.
public const GridViewSelectionStoringMode PerformanceOptimized
Public Const PerformanceOptimized As GridViewSelectionStoringMode
Bootstrap Controls for ASP.NET Core are in maintenance mode. We don’t add new controls or develop new functionality for this product line. Our recommendation is to use the ASP.NET Core Controls suite.