The same error is repeated in three different places in the Grid Migration documentation here
http://docs.kendoui.com/getting-started/using-kendo-with/aspnet-mvc/migration/widgets/grid
This code is given for sending custom data to the action method
That is incorrect, it should be something like this
Note, that the Data method is used on the Action method, rather than on the Ajax method as given in the incorrect document.
It is better decribed here
http://docs.kendoui.com/getting-started/using-kendo-with/aspnet-mvc/helpers/grid/ajax-binding
http://docs.kendoui.com/getting-started/using-kendo-with/aspnet-mvc/migration/widgets/grid
This code is given for sending custom data to the action method
dataSource => dataSource.Ajax().Data(
"sendData"
)
dataSource => dataSource
.Ajax()
.Read(read => read.Action(
"Products_Read"
,
"Home"
)
.Data(
"additionalData"
)
// name of the client function that returns the additional data
)
It is better decribed here
http://docs.kendoui.com/getting-started/using-kendo-with/aspnet-mvc/helpers/grid/ajax-binding