I would set the CommittedItemChanges property of the MudDataGrid to a method in your razor component @code section like so...

<MudDataGrid
Items="@employees"
ReadOnly="false"
EditMode="DataGridEditMode.Cell"
EditTrigger="DataGridEditTrigger.Manual"
Filterable="false"
SortMode="@SortMode.None"
Groupable="false"
CommittedItemChanges="@ItemChanged">
<Columns>
<PropertyColumn Property="x => x.DemoId" Title="Id" IsEditable="false" />
<PropertyColumn Property="x => x.Name" IsEditable="true" />
<PropertyColumn Property="x => x.IsDisabled" IsEditable="true">
<EditTemplate>
<MudCheckBox @bind-Checked="context.Item.IsDisabled" />
</EditTemplate>
</PropertyColumn>
</Columns>
</MudDataGrid>
@code {
public record Employee(bool Retire, string Name, string Position, int YearsEmployed, int Salary, int Rating);
public IEnumerable<Employee> employees;
async void ItemChanged(Employee item)
{
// Save item here.
}

protected override void OnInitialized()
{
employees = new List<Employee>
{
new Employee(true, "Sam", "CPA", 23, 87_000, 4),
new Employee(false, "Alicia", "Product Manager", 11, 143_000, 5),
new Employee(false, "Ira", "Developer", 4, 92_000, 3),
new Employee(true, "John", "IT Director", 17, 229_000, 4),
};
}
}

This way you can handle any processing in the method itself, I use this to return success and warning Snackbars depending on the http status code returned from the server.

You're welcome,

Sorry for the late reply to your question, the easiest way to fix the "Argument 2: cannot convert from 'method group' to 'Microsoft.AspNetCore.Components.EventCallback'" issue is to pass the type of object used by the MudDataGrid into the T property of the component.

Below is an example:

<MudDataGrid T="objectModel" Items="@listOfData" ReadOnly="false"
                                                               EditMode="DataGridEditMode.Cell"
                                                               EditTrigger="DataGridEditTrigger.Manual"
                                                               Filterable="true"
                                                               SortMode="@SortMode.Multiple"
                                                               Groupable="false"
                                                               CommittedItemChanges="@ItemChanged">
                                                               
    async void ItemChanged(objectModel item)
    {
        //Save to database changes made in MudDataGrid row
    }