How to filter data using Entity Framework in a way that DataGridView be editable and context track changes?

Question

I\'m using C# Windows Form Application to populate data from sql server database table using Entity Framework (EFWinForms) using the following code :

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Answer 1

While I'm not certain of your possible usage, I generally use the filter property on a binding source to select certain records without giving up the ability to update the database. Something like this:

        // Grab search string from SearchBox
        string strSearch = Convert.ToString(RichSearchBox.Text);

        // Apply Filter to BindingSource
        tblContactsBindingSource.Filter = "FileAs LIKE '*" + strSearch + "*'";

Then use the Binding Source as the data source for the data grid view:

        // Bind DataGridView to BindingSource
        recipientGridView.DataSource = tblContactsBindingSource;