Question

I have a web service that looks like this

    [WebMethod]
    public int Import(System.Collections.Generic.List<Record> importRecords)
    {
        int count = 0;
        if (importRecords != null && importRecords.Count > 1)
        {
            DataLayer datalayer = new DataLayer();
            foreach (Record brec in importRecords)
                if (rec != null) 
                {
                    datalayer.InsertUpdateRecord(rec);
                    count++;
                }
        }
        return count;
    }

And i have a client software that wants to send data to the web service using this method

 ImportService.BVRImportService importService = new ImportService.ImportService();
 ImportService.Record myRecord = new ImportService.Record();
 myRecord.FirstName = "Adam";
 System.Collections.Generic.List<ImportService.Record> myRecords = 
     new List<ImportService.Record>();
 myRecords.Add(myRecord);
 importService.ImportData(myRecords);

I keep getting this message when I try to compile the client software.

    Error   1   The best overloaded method match for 'ImportTask.ImportService.ImportService.ImportData(ImportTask.ImportService.Record[])' has some invalid arguments
Error   2   Argument '1': cannot convert from 'System.Collections.Generic.List<ImportTask.ImportService.Record>' to 'ImportTask.ImportService.BVRRecord[]'

Does anyone know what i’m doing wrong?

Answer 1

It looks like the reference the client has contains an Record[] instead of a List<Record>. You can fix this by calling the .ToArray method on the List<Record>.

importService.ImportData(myRecords.ToArray());

I’m also confused by the use of Record in code but BVRRecord in the error messages. Are you changing the type names in your solution or are there actually 2 different types? If it’s the latter you’ll also need to convert to the BVRRecord type before calling ImportData.