Why does the IntelliSense and Dynamic Help not work in Visual Studio?
If you recently installed a new version of SpreadsheetGear, you may need to remove the reference to the SpreadsheetGear assembly from your project using the Solution Explorer window in Visual Studio. First, remove the old reference, then, add the new one back by using the .NET tab of the Add Reference dialog. Note: It may be necessary to delete any occurences of SpreadsheetGear.dll from your project directory before adding the new assembly.