How to intercept the sql query generated by an EntityDataSource

The asp.net EntityDataSource (= Entity Framework data source) hides SQL details. But sometimes you could need to see the auto generated SQL command.

Simple: intercept the QueryCreated event of the EntityDataSource

protected void EntityDataSource1_QueryCreated(object sender, QueryCreatedEventArgs e)
{
   LabelX.Text = (e.Query as System.Data.Objects.ObjectQuery).ToTraceString();
}

If are using an ObjectContext, you can extract the SQL casting the query to ObjectQuery.

var db = .... ObjectContext...

var query = (from x in TableName select x);

string sqlquery = (query as System.Data.Objects.ObjectQuery).ToTraceString();