[IgbGrid] DateTime value becomes string when using UpdateCellAsync or UpdateRowAsync

[TomoyaWashio]

Description

When updating a cell or row in IgbGrid using either UpdateCellAsync or UpdateRowAsync, a DateTime value is unexpectedly converted to a string (e.g., "2025-01-01T00:00:00"). As a result, GetCellByKeyAsync(...).Value.GetType() returns System.String instead of the expected System.DateTime.

Steps to reproduce

1. Create a grid (IgbGrid) with a DateTime column.
2. Use UpdateCellAsync or UpdateRowAsync to set a new DateTime value.
3. Retrieve the value using GetCellByKeyAsync(...).Value.
4. Check the type with .GetType() — it is string, not DateTime.

Result

The Value becomes a serialized string, such as "2025-01-01T00:00:00", and its type is System.String.

Expected result

The Value property should preserve the original DateTime type after update, just as it does during initial data binding.

Attachments

C_00242624_BlazorServerApp1.zip