Hi! I use the Linq-to-Sql designer so to model 3 tables and 6 stored procedures and i use one of these to fetch some Customer data (the usual stuff like CustomerName, Address, Country etc). I use it like this: TestDataContext test = new TestDataContext(); var mclients = test.MasterClients_fetch(0); and then i assign the mclients to the DataSource property of a DataGrid and it works well, my Customer data are displayed on the DataGrid. But when i try to do a further select in mclients, then the DataGrid
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