Thank you contacting Syncfusion support.
We have checked your query and currently we don’t have support for “Editing with AllowEditing” property in our SfDataGrid. We have already added it to our feature request list and this feature will be available in the upcoming 2016 Volume 3 main release, which is scheduled to be rolled out by the end of September, 2016.
But you can achieve edit the text of the GridCells during runtime by creating a TemplateColumn and loading an Entry cell into it using the DataTemplate property. We have also published a KB for the same and you can refer it from the following link: