CRM 2011 KeyNotFoundException exception

Question

I am new to CRM development. I have a Custom Entity \"customer\". This Entity has a Field called \"defaultcustomer\", which can be TRUE or FALSE. I am working on a Plug-In where

Answer 1

The error means that particular field is not present in the collection of properties. In CRM, only properties that have been set or updated are included.

Try something like:

foreach (Entity myCustomer in retrieved.Entities)
{
    if (myCustomer.Attributes.ContainsKey("defaultcustomer"))
    {
        myCustomer["defaultcustomer"] = false;
    }
    else
    {
        myCustomer.Attributes.Add("defaultcustomer", false);
    }
    service.Update(myCustomer);
}

Answer 2

The solution posted by @glosrob seems fine. Are you still getting "The given key was not present in the dictionary"?

Try to use ITracingService to get more information about the plugin execution flow.

Answer 3

Have you double checked that the field really is called defaultcustomer?

If it's a custom entity then it's likely the field begins with a prefix, for instance new_defaultcustomer. Make sure you are using the name of the field, not the display name.

Answer 4

While Update all Crm fields are False accept that what you Update the field. For that you can use Pre/Post Images in Plugin. you will found that crm field key and update what you need.