When you call erload:System.Data.SqlClient.SqlCommand.BeginExecuteNonQuery to execute a tsql statement, you must call SqlCommand.EndExecuteNonQuery(IAsyncResult) in order to complete the operation. If the process of executing the command has not yet finished, this method blocks until the operation is complete. Users can verify that the command has completed its operation by using the IAsyncResult instance returned by the SqlCommand.BeginExecuteNonQuery method. If a callback procedure was specified in the call to SqlCommand.BeginExecuteNonQuery, this method must be called.

Namespace: System.Data.SqlClient
Assembly: System.Data (in System.Data.dll)
Assembly Versions: 2.0.0.0