private static void EndOwnershipForTeam(long assetId, int teamId)
{
    const string storedProcedureName = @"up_RemoveAssetOwnershipFromTeam";

    using (var connection = new SqlConnection("context connection=true"))
    using (var command = new SqlCommand(storedProcedureName, connection))
    {
        command.Parameters.AddWithValue("assetId", assetId);
        command.Parameters.AddWithValue("teamId", teamId);

        connection.Open();
        command.ExecuteNonQuery();
    }
}

up_RemoveAssetOwnershipFromTeam

// option 1
private static void EndOwnershipForTeam(long assetId, int teamId)
{
    const string storedProcedureName = @"up_RemoveAssetOwnershipFromTeam";

    using (var connection = new SqlConnection("context connection=true"))
    using (var command = new SqlCommand(storedProcedureName, connection))
    {
        command.CommandType = CommandType.StoredProcedure;
        command.Parameters.AddWithValue("assetId", assetId);
        command.Parameters.AddWithValue("teamId", teamId);

        connection.Open();
        command.ExecuteNonQuery();
    }
}

// option 2
private static void EndOwnershipForTeam(long assetId, int teamId)
{
    const string sql = @"exec up_RemoveAssetOwnershipFromTeam @assetId, @teamId";

    using (var connection = new SqlConnection("context connection=true"))
    using (var command = new SqlCommand(sql, connection))
    {
        command.Parameters.AddWithValue("@assetId", assetId);
        command.Parameters.AddWithValue("@teamId", teamId);

        connection.Open();
        command.ExecuteNonQuery();
    }
}

command.Parameters.AddWithValue("assetId", assetId);
command.Parameters.AddWithValue("teamId", teamId);

command.Parameters.AddWithValue("@assetId", assetId);
command.Parameters.AddWithValue("@teamId", teamId);