We are looking for an ASP.NET compatible data grid that allows for multi-line editing similar to Excel or a WinForms data grid. It must also support very basic keyboard input (tab, arrow keys, return). Note that we are not looking for Excel capabilities (functions, formatting, formulas) ... just a grid for fast data entry.

I've looked at Telerik, Infragistics, ComponentOne, DevExpress, and many others ... all their support teams have said that the controls either do not support multi-line, or do so in such a clunky way that it would be unusable.

Has anyone used any Excel-like grids that they can recommend? The client-side grids seemed closer to what we needed, with Sigma Widgets ( example ) being the closest I've found so far. Extjs's grid was too inflexible, and the jQuery grid was too buggy.